Post-World War I and World War II classes (of Destroyers)
A class — 11 ships, 1929–1930
B class — 9 ships, 1930
C and D class — 14 ships, 1931–1932
E and F class — 18 ships, 1934
G and H class — 24 ships, 1935–1936
I class — 11 ships, 1936–1937
Tribal class (1936) — 27 ships, 1936–1944
J and K class — 16 ships, 1938–1939
Hunt class — 83 ships (20 Batch I, 33 Batch II, 28 Batch III, 2 Batch IV), 1939–1942
L and M class — 16 ships, 1939–1942
N class — 8 ships, 1940–1941
O and P class — 16 ships, 1941–1942
Q and R class — 16 ships, 1941–1942
S and T class — 16 ships, 1942–1943
U and V class — 16 ships, 1942–1943
W and Z class — 16 ships, 1943–1944
C class — 32 ships, 1943–1945
Battle class — 23 ships (16 Batch I, 7 Batch II), 1943–1946
********Class H were WWI class ships. I believe the last one was built in 1939, several years before the game is set.
The most prevelent class of WWII destroyers were of Hunt Class:
The Hunt class was a class of destroyer escorts of the Royal Navy. They are named after British fox hunts. They served as convoy escorts in World War II.
The Hunt class were supposed to be quickly and cheaply built escort destroyers. The Type 1s were under armed; four 4" dual-purpose guns (capable of ship to ship and AA fire) in twin turrets. This was due to a major design error caused by rushed calculations in an overworked design department, leading to instability. One turret had to be removed and ballast added. The next batch of ships had their hulls split lengthways and widened while building to give 33 Type 2s with six 4" guns in 3 turrets. The subsequent 28 Type 3s carried four 4" guns but had two torpedo tubes amidships. The Type 4s were built to a larger different design by J I Thornycroft.
Except for the Type 1s, Hunt class destroyers served with the Royal Navy, Polish Navy, Royal Hellenic Navy (Greece) and Royal Norwegian Navy.
************ Notice the first line “quickly and cheaply built escort destroyers”…. justification for making them cost 10? The last ones came in 1942, however.