What if the Royal Navy had encouraged the government to build many revenue-cutter sloops for a British Coast Guard during the 1930s?
Short answerIt could have created useful coastal-convoy escorts, but Britain would first have had to turn its coordinating coastguard into a seagoing service more like the US Coast Guard.
NotesBritain's coordinating coastguard organization differed from the US Coast Guard's operational fleet, with the Royal Navy performing the British seagoing role. Sloops sat outside key treaty limits, so creating a separate service need not have consumed treaty cruiser or destroyer tonnage. The likely result would have been smaller coastal vessels rather than oceanic escorts, and these could still have proved useful protecting coastal convoys.