Sparked by my search for this board about the WWI German submarine bases of Bruges and Ostend and recently the discovery of a WWI German submarine along the Belgian coast and now the mentioning of the submarine found at Terschellingen (Netherland) and this find made public aftere first during years to have sought for the family of the dead marines, I did a bit research about submarines before and during WWI.

I found this interesting site about the German submarines:
https://www.naval-encyclopedia.com/ww1/german/german-submarines-of-ww1/
And from this site even original footage from the time about a German submarine


And then about the British submarines...I wasn't aware that they originated from the US...
https://en.wikipedia.org/wiki/Holland_602_type_submarine

And about the submarine warfare of WWI in general:
https://en.wikipedia.org/wiki/Holland_602_type_submarine

Kind regards from Paul.

I’m away from my books but I’m sure that the original British subs were based on “Holland” boats - certainly the “A” class (of which one of the originals is at Gosports Submarine museum).


Several VC’s were won by British submariners in the Dardanelles campaign.

VF,

I think you are right as I read in the wiki that I provided
https://en.wikipedia.org/wiki/Holland_602_type_submarine
"In October 1914, after the start of World War I, the British Admiralty ordered ten submarines to design 602E, to be built by Canadian Vickersin Montreal, Quebec. These would become the British H-class submarines. Another ten submarines were secretly constructed at Fore River Yard at Quincy, Massachusetts, in the then neutral United States. This group was impounded by the United States government and ended up in the Chilean Navy and the Royal Canadian Navy after the American declaration of war. A third group, of twenty-five British H-class subs, was constructed in 1917-1919 in Britain, many of them serving in World War II."

Kind regards from Paul.

VF,

I think you are right as I read in the wiki that I provided
https://en.wikipedia.org/wiki/Holland_602_type_submarine
"In October 1914, after the start of World War I, the British Admiralty ordered ten submarines to design 602E, to be built by Canadian Vickersin Montreal, Quebec. These would become the British H-class submarines. Another ten submarines were secretly constructed at Fore River Yard at Quincy, Massachusetts, in the then neutral United States. This group was impounded by the United States government and ended up in the Chilean Navy and the Royal Canadian Navy after the American declaration of war. A third group, of twenty-five British H-class subs, was constructed in 1917-1919 in Britain, many of them serving in World War II."

Kind regards from Paul.

Take a look at https://en.wikipedia.org/wiki/British_submarine_flotilla_in_the_Baltic for stuff about Baltic ops - it was known as "Horton's private lake".

The "E" class were probably the most successful WWI British sub type - also featuring in the Sea of Marmora - see https://en.wikipedia.org/wiki/HMS_E11