In some thread the name and exact topic of which I don't recall, someone called 74s "the backbone of the fleet." Can you guys elaborate the typical roles of 3rd- and 4th- rate ships?
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In some thread the name and exact topic of which I don't recall, someone called 74s "the backbone of the fleet." Can you guys elaborate the typical roles of 3rd- and 4th- rate ships?
I think that it simply refers to the fact that during the Napoleonic wars the 74-gun third-rate was the commonest type of ship-of-the-line.
The workhorse of the Navy.
Rob.
Here is a quick synopsis Jason.
The 74-gun ship is an excellent blend of firepower and handling. It is a stable gun platform and has more guns than many armies!
The 74 is a supremely practical naval weapon and regarded as the best balance between defensive strength and manoeuvrability. A two-deck design, it is strong enough to mount very heavy 32-pounder cannons on its lower gun deck. These, when combined with the upper deck’s 18-pounders, give it a devastating broadside, although this is best delivered at close quarters.
The French developed the 74-gun ship concept in the mid-18th Century. The design was so good that other navies lost no time in copying it for themselves or taking French ships in action. Many French vessels were made from green timber that “worked” in heavy seas and therefore leaked; the French accepted this because they believed the green timber made the ships resilient. British 74s were well built too, although there was a regrettable tendency to save money by recycling timbers, along with their woodworm and rot, from older vessels!
The last 74, HMS Implacable, was finally scuttled in 1949! Built in 1800 by the French, and then captured by the British at Trafalgar in 1805, she stayed in active service until 1842. She ended her days as a coal hulk.
Figures from The Illustrated Companion to Nelson’s Navy.
1811
74 gun: 80
All ships 60 guns or more (ships of the line): 107
You can see the proportion is exceedingly high. Now, I am not sure if the author really meant 3rd rate rather than 74 gun specifically, but still you get the idea that 74 gun SotL were numerically far and away the most common. Thus, workhorse or backbone, since this is what they depended on the most. Now, the proportion was less as you move back towards 1790, but basically, the 74 was the ideal balance of maneuver, cost, and firepower. Bang for your buck...ummmm....pounding for your pound?
To add a little more toyour question, as far as I am aware anyway.
Third rate ships of the line were the main battle ship making up the line of battle, in the 18 and 19 centuries these main battle ships were 64 gun ships, these were superseded by the 74 gun battleship as has been already stated. So these 3rd rate ships were large heavily armed ships designed to fight other battleships in a line of battle and could lend heavy support to other ship and land forces.
4th rates were larger frigates or vesels under 64 guns but more than the light 38 gun frigates. Their role would be supporting the main battleships and be the command ships of frigate flotillas, to beef these up without taking away ships from the main battleline.
5th and 6th rates were the frigates, their role was recce, shadowing enemy fleets, basically the same role as light cavalry on land.
They generally did not take part in the main battleline and it was considered bad taste for battleships to engage and fire upon the lighter frigates.
Hope this helps and is justa brief synopsis of my inyerpretation. If others have a different idea i am sure they will join in.
Good overall consideration of the role of the various ships Chris.
I would just add a couple of things. The few 80/ 90 gun ships which often acted as Flagships in the less active theaters of action such as the Indies, Caribbean or the Cape Squadron. Also the other uses of Frigates in the Main Battle as Repeaters for the Flags of the Admiral and Vice/Rear Admirals. Plus giving succor to stricken Liners, either in removing crews or in towing them off, and at the conclusion of a battle, standing off enemy Liners sterns or Bows to ensure their surrender.:surrender:
Rob.
The nature of wood as a material and the construction techniques made the length of a ship limited. This meant that 74 was a practical size. The Tonnant class and Buccantaur class 80 gun ships were tries to make bigger ships that still were as good, but they weren't structurally and lost some manoeuvrability. The three deckers caught the wind in the hull more and due to more weight over a not much bigger area in the water they were much more cumbersome and had a bigger draft. In the battle of Copenhagen the heavier ships couldn't partake due to their draft and the Dutch used their lesser draft in some instances. It was an advantage.
And naturally you do want to get as many guns as possible per length of the line, but still keep space between the ships to avoid collisions. Guns and manoeuvrability...
Not to forget that a 74 was a true show of force but still cheaper to maintain due to fewer men and less maintenance than bigger ships. It was also an economical sweet spot.