Page 2 of 4 FirstFirst 1234 LastLast
Results 51 to 100 of 182

Thread: 2017 Captains Cabin

  1. #51
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    It is funny that you should say that Neil, because I have always played the double shot on first fire only because I never find ships have time to reload doubled in the thick of battle.
    If reducing a ships stern to a hulk at the end of a battle with nothing else going on I may relax this a little.
    Leander, for instance had so much time to wander around the fleet before coming up with the Santa Ana that I allowed her the liberty of using double shot again. My general consensus, however would be that if one ship is doubling, then any other ship on whichever side, AI or not, if it has time to load should be allowed the same privilege.
    Rob.

  2. #52
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Quote Originally Posted by Bligh View Post
    It is funny that you should say that Neil, because I have always played the double shot on first fire only because I never find ships have time to reload doubled in the thick of battle.
    If reducing a ships stern to a hulk at the end of a battle with nothing else going on I may relax this a little.
    Leander, for instance had so much time to wander around the fleet before coming up with the Santa Ana that I allowed her the liberty of using double shot again. My general consensus, however would be that if one ship is doubling, then any other ship on whichever side, AI or not, if it has time to load should be allowed the same privilege.
    Rob.
    As the custom ai rules currently try to get ships as close as possible, I think starting all AI ships with double shot makes sense. That gives the player more incentive to maintain range, which is much harder than plowing into them. It will also help balance those first turn barrages that we throw at the ai that tend to win games before they begin. Or we could simply ban double shot, or have it as a captaincy or crew skill that needs to be earned?

  3. #53
    Stats Committee
    Captain
    Sweden

    Join Date
    Jan 2015
    Location
    Linköping
    Log Entries
    3,943
    Blog Entries
    6
    Name
    Jonas

    Default

    Make each type only have half the range. Long range (yellow) is half ruler and short range (orange) is quarter ruler. You still get both and can fire not catching the enemy with both types. Limiting range that much would limit the value of double shot.

  4. #54
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    Just been reading Line of Battle.

    It would seem double shot was only very effective at pistol shot range.

    Perhaps reducing the effective range of double shot to 1/4 ruler length only may suffice?

  5. #55
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Quote Originally Posted by Union Jack View Post
    Just been reading Line of Battle.

    It would seem double shot was only very effective at pistol shot range.

    Perhaps reducing the effective range of double shot to 1/4 ruler length only may suffice?
    That's a solid idea. And it makes sense since the energy from the powder will be used on two balls rather than one, so largely reduced muzzle velocity.

  6. #56
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Months almost over! Who is going to get their game in this weekend?

  7. #57
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Here is a bit on Carronades to be going on with.
    I will do one on the Long guns ASAP.


    carronades.

    Name:  1024px-Carronades_made_at_the_Carron_Works,_near_Falkirk.jpg
Views: 1444
Size:  200.3 KB


    A carronade is a short, smoothbore, cast iron cannon which was used by the Royal Navy and first produced by the Carron Company, an ironworks in Falkirk, Scotland, UK. It was used from the 1770s to the 1850s. Its main function was to serve as a powerful, short-range, anti-ship and anti-crew weapon.[1] Carronades were initially considered very successful, but they eventually disappeared as rifled naval artillery changed the shape of the projectile, exploding shells replaced solid shot, and fewer naval engagements were fought at short ranges.

    History.

    Name:  68-pounder British naval carronade.jpg
Views: 2244
Size:  24.3 KB


    68-pounder British naval carronade, with slider carriage, on HMS Victory


    The carronade was designed as a short-range naval weapon with a low muzzle velocity for merchant ships, but it also found a niche role on warships. It was produced by the Carron ironworks and was at first sold as a system with the gun, mounting, and shot all together. The standard package of shot per gun was 25 roundshot, 15 barshot, 15 double-headed shot, 10 "single" grapeshot, and 10 "single" canister shot. "Single" meant that the shot weighed the same as the roundshot, while some other canister and grapeshot were also included which weighed one and a half times the roundshot.

    Name:  800px-Gaskoin_Karl_by_Saxon.jpg
Views: 763
Size:  188.7 KB

    Charles Gascoigne

    Its invention is variously ascribed to Lieutenant General Robert Melville in 1759, or to Charles Gascoigne, manager of the Carron Company from 1769 to 1779. In its early years, the weapon was sometimes called a "mellvinade" or a "gasconade". The carronade can be seen as the culmination of a development of naval guns reducing the barrel length and gunpowder charge. The Carron Company was already selling a "new light-constructed" gun, two-thirds of the weight of the standard naval gun and charged with one sixth of the weight of ball in powder before it introduced the carronade, which further halved the gunpowder charge.

    Name:  Carron Ironworks.jpg
Views: 914
Size:  33.4 KB
    Carron Ironworks.

    Theory of design.

    The advantages for merchant ships are described in an advertising pamphlet of 1779. Production of both shot and gun by the same firm immediately allowed a reduction in the windage, the gap between the bore of the gun and the diameter of the ball. The mounting, attached to the side of the ship on a pivot, took the recoil on a slider. The reduced recoil did not alter the alignment of the gun. The smaller gunpowder charge reduced the barrel heating in action. The pamphlet advocated the use of woollen cartridges, which eliminated the need for wadding and worming, although they were more expensive.

    Simplifying gunnery for comparatively untrained merchant seamen in both aiming and reloading was part of the rationale for the gun. The replacement of trunnions by a bolt underneath, to connect the gun to the mounting, reduced the width of the carriage enhancing the wide angle of fire. A merchant ship would almost always be running away from its enemy, so a wide angle of fire was much more important than on a warship. A carronade weighed a quarter as much and used a quarter to a third of the gunpowder charge as a long gun firing the same cannonball.


    Name:  Carronade_at_the_Carron_Works,_near_Falkirk.jpg
Views: 1071
Size:  168.9 KB
    Remains of a Carronade displayed at the Carron Ironworks.


    The reduced charge allowed carronades to have a shorter length and much lighter weight than long guns. Increasing the size of the bore and ball reduces the required length of barrel. The force acting on the ball is proportional to the square of the diameter, while the mass of the ball rises by the cube, so acceleration is slower; thus, the barrel can be shorter and therefore lighter. Long guns were also excessively heavy in comparison to carronades because they were over-specified, being capable of being double-shotted, whereas it was dangerous to do this in a carronade. A ship could carry more carronades, or carronades of a larger caliber, than long guns, and carronades could be mounted on the upper decks, where heavy long guns could cause the ship to be top-heavy and unstable. Carronades also required a smaller gun crew, which was very important for merchant ships, and they were faster to reload.


    Name:  800px-Clocktower_entrance_to_the_former_Carron_Works,_near_Falkirk.jpg
Views: 2077
Size:  123.7 KB

    Gatehouse of the Carron Ironworks.


    Early use.

    Carronades initially became popular on British merchant ships during the American Revolutionary War. A lightweight gun that needed only a small gun crew and was devastating at short range was a weapon well suited to defending merchant ships against French and American privateers. The French came in possession of their first carronades in December 1779 with the capture of the brig Finkastre by the frigate Précieuse, but the weapon was judged ineffective and was not adopted at the time.
    However, in the Action of 4 September 1782, the impact of a single carronade broadside fired at close range by the frigate HMS Rainbow under Henry Trollope caused a wounded French captain to capitulate and surrender the Hébé after a short fightThe Royal Navy was initially reluctant to adopt the guns, mainly due to mistrust of the Carron Company, which had developed a reputation for incompetence and commercial sharp dealing. Carronades were not even counted in numbering the guns of a ship.

    Name:  200px-John_Montagu,_4th_Earl_of_Sandwich.jpg
Views: 2025
Size:  14.1 KB

    It was Lord Sandwich who eventually started mounting them in place of the light guns on the forecastle and quarterdeck of ships. They soon proved their effectiveness in battle. French gun foundries were unable to produce equivalents for twenty years, so carronades gave British warships a significant tactical advantage during the latter part of the 18th century — though French ships mounted another type of weapon in the same role, the obusier de vaisseau.


    Name:  Victory vs Bucentaure.jpg
Views: 1064
Size:  73.6 KB
    Victory vs Bucentaure.


    HMS Victory used the two 68-pounder carronades which she carried on her forecastle to great effect at the Battle of Trafalgar, clearing the gun deck of the Bucentaure by firing a round shot and a keg of 500 musket balls through the Bucentaure's stern windows.
    The carronade was initially very successful and widely adopted, and a few experimental ships were fitted with a carronade-only armament, such as HMS Glatton and HMS Rainbow.

    Name:  HMSGlatton.jpg
Views: 902
Size:  41.8 KB
    HMS Glatton

    Glatton, a fourth-rate ship with 56 guns, had a more destructive broadside than HMS Victory, a first-rate ship with 100 guns. Glatton and Rainbow were both successful in battle, though the carronade's lack of range was an arguable tactical disadvantage of this arrangement against an opponent who could keep well clear and still use his long guns.
    In the 1810s and 1820s, tactics started to place a greater emphasis on the accuracy of long-range gunfire, and less on the weight of a broadside. Indeed, Captain David Porter of USS Essex complained when the navy replaced his 12-pounder long guns with 32-pounder carronades. The carronade disappeared from the Royal Navy from the 1850s after the development of steel-jacketed cannon by William George Armstrong and Joseph Whitworth. Carronades were nevertheless still used in the American Civil War in the 1860s. The last known use of a carronade in conflict was during the First Boer War. In the siege of Potchefstroom, the Boers used 'Ou Griet' against the British fort, an antique carronade mounted on a wagon axle.


    Design.

    Name:  Admiralty_18-pdr_carronade_1808.jpg
Views: 890
Size:  166.9 KB

    The original design of the carronade included a different type of mounting on a wooden carriage, where the cannon itself had a projecting loop on the bottom that was pinned to the gun carriage, which was fastened to the side of the ship, with a pivoting mounting which allowed the gun to be rotated, while rearward recoil was contained, sometimes with a slider carriage. In some versions, a wedge was placed underneath the chamber to control elevation, while in later versions an elevating screw was used.
    Carronades had a chamber that was one-caliber smaller than the bore; for example, an 18-pounder carronade had its chamber bored equal to a 12-pounder. This was partly to reduce the weight of the cannon, but also had the effect of reducing the velocity of the cannonball and range to which it could fire. However, one factor mitigating the deficiency in range was that carronades could be bored with a much tighter windage than long guns. This meant that more of the propellant went to moving the shot, rather than bypassing it.
    Naval artillery during the Age of Sail simply was not accurate, regardless of whether the cannon was a gun or a carronade. Almost all barrels were smoothbore, not rifled, and tolerances had wide variations on everything from the actual roundness and straightness of the barrel to shot size in relation to the bores (windage). Sights were rudimentary or non-existent, and elevation was controlled by wedges and guesswork. As a result, effective or decisive naval battles were generally fought at ranges under 100 yards where the carronade's heavier ball was useful and its shorter range was not a huge problem. Technological improvements changed the capabilities of naval armament by the nineteenth century, but muzzle-loading smoothbore cannon were still not very accurate. As a result, naval tactics in line of battle counted on the effect of rapid broadsides at short range, to which the carronade could make a significant contribution. In smaller ships like frigates, privateers and raiders, the captains still appreciated long guns for their increased range, since ships were not expected to engage in line-of-battle, but rather often found themselves engaged in long chases or attempts to work to windward. It was often better tactically to attempt to shoot the opponent's rigging down at range rather than close in for direct combat, where their weaker hulls were at risk. They also often found themselves far from home or harbors, where repairs and spare yards, masts or rigging could be found. Generally, although the power of the "smashers", as they were called, was acknowledged, most captains preferred the long guns, as was traditional.


    Ordnance.



    Name:  Diagram of a carronade mounting.jpg
Views: 1691
Size:  160.9 KB

    Diagram of a carronade mounting. The lack of a nozzle or muzzle cup suggests this carronade pre-dates ca. 1790, and it must date to 1785 or earlier as a copy of this drawing in the Dutch archives bears that date.

    Name:  Model of a carronade.jpg
Views: 1932
Size:  44.5 KB
    Model of a carronade with grapeshot ammunition.


    A carronade was much shorter and a third to a quarter of the weight of an equivalent long gun. A 32-pounder carronade, for example, weighed less than a ton, but a 32-pounder long gun weighed over 3 tons. Carronades were manufactured in the usual naval gun sizes: 6-, 12-, 18-, 24-, 32-, 42-, and 68-pounder versions are known.

    The smaller carronades served in three roles. First, they often constituted the entire armament of unrated vessels. For instance, the Ballahoo- and Cuckoo-class schooners were armed only with four 12-pounder carronades. Second, gunboats such as those that the Americans deployed at the Battle of Lake Borgne often had one large 18-, 24-, or 32-pounder gun forward on a pivot, and two smaller carronades aft. Finally, larger vessels carried a few 12-, 18-, or 24-pounders to arm their ship's boats — the cutters, pinnaces, launches, barges, and the like — to give them firepower for boat actions. For instance, each of the 42 larger British boats at the Battle of Lake Borgne carried a carronade in its bow; only the three gigs were unarmed.

    At the other end, even a quite small vessel might carry the 68-pounders. For instance, Commander William Layman of the Cruizer-class brig sloop HMS Raven replaced her two forward 6-pounder guns and 32-pounder carronades with a single 68-pounder on a pivot, and then did the same with two of the aft 32-pounder carronades. By doing this, he replaced 70 pounds of broadside with 136 pounds (assuming that both 68-pounders would usually fire on the same side), and ensured that Raven would have less dead-space to her front and rear.

    Carronades were not counted in a ship of the line's rated number of guns. The classification of Royal Navy vessels in this period can therefore mislead; they would often be carrying fewer guns but more pieces of ordnance than they were described as carrying.
    The carronade, like other naval guns, was mounted with ropes to restrain the recoil, but the details of the gun mounting were usually quite different. The carronade was typically mounted on a sliding gun carriage rather than a wheeled gun carriage, and elevation was achieved with a turnscrew, like field guns, rather than the quoins (wooden wedges) usual for naval guns. In addition, a carronade was usually mounted on a lug underneath the barrel, rather than the usual trunnions to either side. As a result, the carronade had an unusually high centre of gravity. Towards the end of the period of use, some carronades were fitted with trunnions to lower their centres of gravity, to create a variant known as the "gunnade". Gunnades, introduced around 1820, are distinct from the earliest carronades, which also featured trunnions.
    In the later 18th century, a new type of cannon was developed in Britain, which was a cross between a cannon and a carronade, and which was called a cannonade (not to be confused with the term cannonade which refers to rapid and sustained artillery fire or the act of firing as such). An example was the "medium 18 pounder", which was shorter and lighter than a gun, yet longer than a carronade. While seemingly a good idea in theory, it was found that the gun was less accurate and shorter ranged than a long cannon, less powerful than a carronade, and at 28 cwt, too light for the powerful charge, meaning recoil was excessive and often broke the breachings, or ropes, which attached the gun to the hull timbers. They were quickly removed from service in most cases, although a number were retained on ships in merchant service, such as the East India Company, who weren't generally expected to engage in combat. A number of the merchant ships in the Battle of Pulo Aura were armed with cannonades. This was a fight between a fleet of East India Company merchantmen under command of Commodore Nathaniel Dance and a French squadron under Admiral Linois; it was unusual for merchant ships to engage in combat, but they successfully beat off the French in series of engagements, convincing them they were actually facing a powerful force of Royal Navy vessels; this action was later used as the basis for the climactic battle in the book H.M.S Surprise, part of the famous Aubrey and Maturin series by Patrick O'Brian

    Name:  Carronade on a garrison mount.jpg
Views: 851
Size:  239.0 KB


    Carronade on a garrison mount, used to defend fortifications. Government House, Bermuda.
    The East India Company (EIC) also used carronades, and these appear to be larger, and heavier than those that Royal Navy used. In his discussion of the single-ship action in which the French frigate Piémontaise captured the East Indiaman Warren Hastings on 11 June 1805, the naval historian William James compared the 18-pounder carronades on Warren Hastings with the 18-pounder carronades that the British Royal Navy used. The EIC 18-pounder was 5 feet (1.5 m) long, and weighed 15 12 Cwt (1,736 pounds (787 kg)); the Royal Navy's 18-pounder carronade was 3 feet 3 inches (1.0 m) and weighed 10 12 Cwt (1,176 pounds (533 kg)). James's figures show the EIC's 12-pounder carronades were 3 feet 3 inches (1.0 m) long, and weighed 8 12 Cwt (952 pounds (432 kg)); the Royal Navy's 12-pounder carronade was 2 feet 8 inches (0.8 m) and weighed 6 12 Cwt (728 pounds (330 kg)).

    Range.



    Name:  Ranges of Carronades.jpg
Views: 759
Size:  104.4 KB
    There was usually a considerable gap (known as windage) between the ball and the inside of the gun barrel, as a result of irregularities in the size of cannonballs and the difficulty of boring out gun barrels. The windage of a cannon was often as much as a quarter of an inch and caused a considerable loss of projectile power. The manufacturing practices introduced by the Carron Company reduced the windage considerably. Despite the reduced windage, carronades had a much shorter range than the equivalent long gun, typically a third to a half, because they used a much smaller propellant charge (the chamber for the powder was smaller than the bore for the ball). Typical naval tactics in the late 18th century, however, emphasised short-range broadsides, so the range was not thought to be a problem.

    The air resistance of a spherical cannonball in supersonic flight is much greater than in subsonic flight. For a given weight of powder, a larger ball, having a large mass, has a lower maximum velocity which reduces the range of supersonic flight. But the increase in the distance of subsonic flight may have more than compensated, as the air resistance is proportional to the square of the diameter but the mass is proportional to the cube. The Victory's 68 lb carronade is reported to have had a maximum range of 1,280 yards at an angle of 5 degrees with a 5 lb charge of gunpowder.[11] The structure of Victory's forecastle limited the weight of the guns. The other gun on the forecastle was a medium 12 lb cannon, which had a maximum range of 1,320 yards.] Carronades were not noticeably short range for either the weight of the gun or the gunpowder charge. Carronades were short range because of their small gunpowder charge but their lower muzzle velocity required a higher trajectory. But at sea, the range of the long gun had little use. At sea, guns were on moving platforms making timing of fire very difficult. Pitch and roll meant that most ships fought at close range of a few hundred yards or less. In battles between warships, carronades could be at a disadvantage if they were fought outside its point blank range; such as in the case of USS Essex, a frigate equipped almost solely with carronades, which was reduced to a hulk by the longer range guns of HMS Phoebe and HMS Cherub off Valparaiso, Chile in the March 28, 1814 Battle of Valparaiso. Warships often aimed at the enemy’s hull to destroy its capacity for battle. A ball fired from a cannon on the downward roll of the ship would often ricochet off the sea into the enemy hull. A merchant ship would more often aim at the bigger target of the masts and rigging in the hope of escaping a pursuing enemy. The higher trajectory required of carronades at ranges of 400 yards or more was little disadvantage for its use by merchant ships or any naval ship fleeing a more powerful enemy. The theory for centuries had always associated long barrels with long range, but experience had also shown that shortening the barrel did not reduce performance as much as expected (e.g., the English musket barrel between 1630 and 1660 went down from 4 to 3 feet long).

    Diagram.


    Name:  Carronade-tag_svg.jpg
Views: 1532
Size:  54.0 KB


    1. Breech bolt
    2. Aft sight
    3. Vent hole
    4. Front sight
    5. First reinforcing ring
    6. Barrel
    7. Muzzle
    8. Second reinforcing ring
    9. Azimutal pivot
    10. Chock
    11. Elevation pivot
    12. Wheel
    13. Mobile pedestal
    14. Carriage
    15. Pommel
    16. Elevation thread

    Rob.

  8. #58
    Stats Committee
    Captain
    Sweden

    Join Date
    Jan 2015
    Location
    Linköping
    Log Entries
    3,943
    Blog Entries
    6
    Name
    Jonas

    Default

    Is this thread really the best place for this information?

    I would have suggested its own thread under the Historical section.

  9. #59
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    I did consider that very idea Jonas, but decided that I had written this in direct response to the ongoing discussion and therefore it would attract the audience I aiming it for here rather than tucked away in the historical section. the information can be more readily accessed near to the discussion.
    Rob.

  10. #60
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Interesting, im suprised that the penetration was that close honestly.

    And WOW! The planks on HMS Victory were 3/4 of a meter thick!?

  11. #61
    Stats Committee
    Captain
    Sweden

    Join Date
    Jan 2015
    Location
    Linköping
    Log Entries
    3,943
    Blog Entries
    6
    Name
    Jonas

    Default

    Hugh, just don't tell any American of the 12 lb penetrating USS Constitution at 450 meters... Even I'm a little... doubtful.

  12. #62
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Yes, it does seem a bit far fetched. It shouldnt be too hard to calculate it though with a little research.

  13. #63
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Ill give it a try

    Force = Perimeter of impact area x Thickness of material x material shear strength

    T = 0.530m
    S= 10~11MPa based on properly prepared white oak timber

    Now to work out P

    Diameter of a 12lb cannon ball is ~4.52" = 0.115 meters

    The balls are spherical though and so there will not be a flat area hitting the hull. To account for this i will have to make a guesstimate. Lets say that the impact diameter is closer to 1" , 2.54cm, 0.0254m.

    The perimeter of the shearing area will be pi*D = 0.0798m

    So combine all of this
    F=(0.0798m)(0.530m)(11Mpa)
    F=465.2 KN

    This is the minimum force required to break the hull on the USS Constitution.

    I made a program a few weeks ago to determine final speed of a ball moving through the air given drag,

    so with a 300m/s muzzle velocity from a 12lb carronade and a distance of 450m the impact speed should be ~ 58.6m/s

    Force of impact

    Mc = 3.78kg = Mass of cannon ball
    Wc = 37.07 N = Weight of cannon ball
    d = 0.02m = distance of deformation of wood due to deceleration of cannon ball

    Rate of deceleration

    a= v^2/2d
    a= 85849 m/s2

    Force of impact

    F=W.a/g
    F= 324.4 KN

    Fi<Fw

    324.4 KN < 465.2 KN

    ########

    So based on these back of the envelope calculations, it shouldn't be possible for a cannon ball fired from a 12lb carronade to penetrate the armor of the USS Constitution at 450m

    ########

    If we did the long gun the only difference would be the initial velocity of the shot, which should be around 440 m/s, impact velocity will be around 86m/s

    This will give an impact Force of around 698KN which will be enough to punch through old iron sides.
    Last edited by Hjl; 01-27-2017 at 20:45.

  14. #64
    Midshipman
    United States

    Join Date
    Mar 2015
    Location
    Maryland
    Log Entries
    320
    Name
    Bob

    Default

    Quote Originally Posted by Hjl View Post
    Ill give it a try

    Force = Perimeter of impact area x Thickness of material x material shear strength

    T = 0.530m
    S= 10~11MPa based on properly prepared white oak timber

    Now to work out P

    Diameter of a 12lb cannon ball is ~4.52" = 0.115 meters

    The balls are spherical though and so there will not be a flat area hitting the hull. To account for this i will have to make a guesstimate. Lets say that the impact diameter is closer to 1" , 2.54cm, 0.0254m.

    The perimeter of the shearing area will be pi*D = 0.0798m

    So combine all of this
    F=(0.0798m)(0.530m)(11Mpa)
    F=465.2 KN

    This is the minimum force required to break the hull on the USS Constitution.

    I made a program a few weeks ago to determine final speed of a ball moving through the air given drag,

    so with a 300m/s muzzle velocity from a 12lb carronade and a distance of 450m the impact speed should be ~ 58.6m/s

    Force of impact

    Mc = 3.78kg = Mass of cannon ball
    Wc = 37.07 N = Weight of cannon ball
    d = 0.02m = distance of deformation of wood due to deceleration of cannon ball

    Rate of deceleration

    a= v^2/2d
    a= 85849 m/s2

    Force of impact

    F=W.a/g
    F= 324.4 KN

    Fi<Fw

    324.4 KN < 465.2 KN

    ########

    So based on these back of the envelope calculations, it shouldn't be possible for a cannon ball fired from a 12lb carronade to penetrate the armor of the USS Constitution at 450m

    ########

    If we did the long gun the only difference would be the initial velocity of the shot, which should be around 440 m/s, impact velocity will be around 86m/s

    This will give an impact Force of around 698KN which will be enough to punch through old iron sides.
    Huh?
    Bob

    Rules are rough approximations of what you think I might do!

  15. #65
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    I was trying to get a picture of how a cannon ball would fair against the USS constitutions side at our, and show how I did it so you can tell me where I'm wrong.

    If I'm right, then it's a close thing. Wood is also not the best armor.....

  16. #66
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Where'd the forum go all weekend?

  17. #67
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Problem with the main host server according to the Lord high Admiral.
    Aerodrome was down too.
    Rob.

  18. #68
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    AAR. Pell Mell Butcher's Bill now posted.
    Rob.

  19. #69
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    Would this link help

    <a href="https://books.google.co.uk/books?id=3j8FAAAAMAAJ&dq=New%20Principles%20in%20Gunnery&as_brr=1&pg=PA79&ci=123%2C1005%2C730%2C463&source=bookclip"><img src="https://books.google.co.uk/books/content?id=3j8FAAAAMAAJ&pg=PA79&img=1&zoom=3&hl=en&sig=ACfU3U18WpAgTTCEr4gO2xg-Fb9aqF0wAg&ci=123%2C1005%2C730%2C463&edge=0"/></a>

  20. #70
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    No Neil.
    It won't go to a site on Google.
    Rob.

  21. #71
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    To date since the solo campaign(s) started in July 2014 the following have been played:

    2014 4 Solo games were played 19 times

    2015 12 solo games were played 55 times

    2016 12 solo games were played 60 times (to date)

    2017 2 Solo games were played 4 times (to date)

    A big thank you to all the scenario writers and players who have taken part.

  22. #72
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    I have linked into the scenario sticky all the AAR's played to date.

  23. #73
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Let's see if we can break last years record!

  24. #74
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    May I add my thanks to you all for the effort put into these games, which along with the historical research and model making seem to form the backbone of the Anchorage.
    That so few people can achieve so much shows the strength of commitment which we have to the game in spite of the setbacks.
    Well done everybody.
    Rob.

  25. #75
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    Hoping to get the Letters of Marque games up to date next 2 weeks. All caught up with the nation v nation.

  26. #76
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Good for you Neil.
    I am just about ready to run that one, once Vapnartak is done and dusted this weekend. We seem to be very busy just of late.

    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  27. #77
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    I still have 3 to play from 2016 and Feb 2017's too.

  28. #78
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    AH! That makes a bit of a difference. Still look at the sacrifice as being worth the time you took to build your gaming room.
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  29. #79
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Now that I have seen the totals for our Jan mission displayed, can you tell me how I can change the Baleraphon's -3 points needed for repairs by spending extra rep?
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  30. #80
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

  31. #81
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Looks very interesting Hugh.
    I have not personally any knowledge of it, but I bet Dave Manley has.
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  32. #82
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Here are all the damage cards you asked for Neil, and I'm sorry it took a week to get around to it.





    .Name:  IMG_3955.jpg
Views: 756
Size:  124.5 KBName:  IMG_4010.jpg
Views: 691
Size:  115.9 KBName:  IMG_4011.jpg
Views: 730
Size:  113.9 KBName:  IMG_3958.jpg
Views: 700
Size:  124.5 KBName:  IMG_3959.jpg
Views: 667
Size:  117.6 KBName:  IMG_3960.jpg
Views: 776
Size:  118.5 KBName:  IMG_3961.jpg
Views: 723
Size:  107.1 KBName:  IMG_3962.jpg
Views: 732
Size:  133.7 KBName:  IMG_3963.jpg
Views: 733
Size:  130.8 KBName:  IMG_3964.jpg
Views: 672
Size:  116.6 KBName:  IMG_3965.jpg
Views: 663
Size:  119.8 KBName:  IMG_3967.jpg
Views: 723
Size:  130.1 KBName:  IMG_3968.jpg
Views: 732
Size:  128.3 KBName:  IMG_3970.jpg
Views: 677
Size:  116.5 KBName:  IMG_3971.jpg
Views: 707
Size:  99.5 KBName:  IMG_3972.jpg
Views: 691
Size:  119.3 KBName:  IMG_3952.jpg
Views: 609
Size:  121.3 KBName:  IMG_3953.jpg
Views: 649
Size:  122.9 KBName:  IMG_3954.jpg
Views: 658
Size:  132.6 KB


    Rob.
    Attached Images Attached Images     
    Last edited by Bligh; 02-12-2017 at 12:27.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  33. #83
    Stats Committee
    Captain
    Sweden

    Join Date
    Jan 2015
    Location
    Linköping
    Log Entries
    3,943
    Blog Entries
    6
    Name
    Jonas

    Default

    You managed to mix it up a little, Rob. The Santa Ana and Mejicano has the wrong middle part.

  34. #84
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Well I'll be horn swoggled!
    I thought that the way they had done the interlocks were foolproof? Obviously not idiot proof though. I'll redo those tomorrow.
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  35. #85
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Is someone updating the spreadsheet?

  36. #86
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    I think Neil is doing it.
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  37. #87
    Midshipman
    United States

    Join Date
    Mar 2015
    Location
    Maryland
    Log Entries
    320
    Name
    Bob

    Default

    Quote Originally Posted by Hjl View Post
    Is someone updating the spreadsheet?
    Yes. I have updated the spreadsheet when I see AARs on the forum. There have been very few. If I have missed some let me know where they are and the result will appear on the sheet.
    Bob

    Rules are rough approximations of what you think I might do!

  38. #88
    Midshipman
    United States

    Join Date
    Mar 2015
    Location
    Maryland
    Log Entries
    320
    Name
    Bob

    Default

    Quote Originally Posted by Bligh View Post
    I think Neil is doing it.
    Rob.
    No, Rob, I am.
    Bob

    Rules are rough approximations of what you think I might do!

  39. #89
    2nd Lieutenant
    United States

    Join Date
    Jan 2016
    Location
    TX
    Log Entries
    806
    Blog Entries
    1
    Name
    Hugh

    Default

    Quote Originally Posted by Bos'n View Post
    Yes. I have updated the spreadsheet when I see AARs on the forum. There have been very few. If I have missed some let me know where they are and the result will appear on the sheet.
    OH sorry, I was referring to the ship stat spreadsheet being updated to wave 3

  40. #90
    Midshipman
    United States

    Join Date
    Mar 2015
    Location
    Maryland
    Log Entries
    320
    Name
    Bob

    Default

    Quote Originally Posted by Bligh View Post
    Now that I have seen the totals for our Jan mission displayed, can you tell me how I can change the Baleraphon's -3 points needed for repairs by spending extra rep?
    Rob.
    Rob,

    It takes a lot of time to fix that much damage. In this game, you have a choice to use Baleraphon with the first 3 hull boxes covered or leave her in port to finish repairs. I happen to know the person writing the March scenario and you probably will not be hurt by leaving her at home. She will be fit as a fiddle in time for the May game.
    Bob

    Rules are rough approximations of what you think I might do!

  41. #91
    Midshipman
    United States

    Join Date
    Mar 2015
    Location
    Maryland
    Log Entries
    320
    Name
    Bob

    Default

    Quote Originally Posted by Hjl View Post
    OH sorry, I was referring to the ship stat spreadsheet being updated to wave 3
    My confusion, sorry. It's hard to keep up with all of the different conversations going on. MY BAD!
    Bob

    Rules are rough approximations of what you think I might do!

  42. #92
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    Quote Originally Posted by Bos'n View Post
    Rob,

    I happen to know the person writing the March scenario and you probably will not be hurt by leaving her at home. She will be fit as a fiddle in time for the May game.
    Thanks for the info Bob.
    It is a relief to know that, as my downfall last year was the working out of the repairs for lots of ships all at one time. In the end I juust gave up on it as I got too far behind.
    As for not many AARs yet, I'm hoping it's because people are still catching up with last years.
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  43. #93
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    Finishing off 2016 by Tuesday. Leaving next week for remaining 2017 missions.

  44. #94
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    I managed to sail Feb today Neil.
    It was interesting and not what I expected.
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  45. #95
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    Missed the pics Rob. Cheers. I can do a quick fix on the spreadsheet bu can't upload until my internet is sorted. It takes so long to type on a phone, then remember to check for predictived texting I might miss some so apologies.

    Neil

  46. #96
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    That's O.K. Neil.
    I have a couple of errors to correct this evening when i get the Spanish out again.
    hope you get full service back soon.
    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  47. #97
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    Rob is there a French ship missing? There are only 5 cards.

  48. #98
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    I make it six Neil.
    Did you see the ones in Attached?

    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  49. #99
    Admiral of the Fleet.
    Baron
    England

    Join Date
    Nov 2011
    Location
    Notts
    Log Entries
    22,272
    Blog Entries
    22
    Name
    Rob

    Default

    These are the others you asked for.

    Name:  IMG_4006.jpg
Views: 622
Size:  103.6 KB

    Name:  IMG_4007.jpg
Views: 607
Size:  102.0 KB

    Name:  IMG_4008.jpg
Views: 620
Size:  108.8 KB

    Name:  IMG_4009.jpg
Views: 574
Size:  104.4 KB

    Rob.
    The Business of the commander-in-chief is first to bring an enemy fleet to battle on the most advantageous terms to himself, (I mean that of laying his ships close on board the enemy, as expeditiously as possible); and secondly to continue them there until the business is decided.

  50. #100
    Master & Commander
    UK

    Join Date
    Feb 2013
    Location
    Northumberland
    Log Entries
    1,821
    Blog Entries
    2
    Name
    Neil

    Default

    File is uploaded and in the moderation queue.

    UJ

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •