Fletcher machinery offers little to a Canadian Tribal

Could Canada build a Tribal-class destroyer with Fletcher machinery in 1940, and would it be useful?

It was technically possible but operationally unattractive because the speed gain was small and the American machinery complicated support.

The proposed substitution would replace three Admiralty boilers and roughly 44,000 shaft horsepower with a four-boiler, 60,000-shaft-horsepower Fletcher plant. It is considered possible to fit the machinery into a Tribal. Despite the extra 16,000 shaft horsepower, the estimated speed rises only from about 36 knots to perhaps 37 or 38 knots. Canadian Tribals operating with British forces in European waters would then need spares for machinery that their usual support network did not carry. The extra power offers little reward for that complication unless the normal engines are unavailable and American machinery can be obtained quickly. Leaving room for better boilers at a later refit is raised as another conditional design option.