The Russians received some Vosper-type PT boats from the Unites States via lend-lease. The PT-73 in McHale's Navy is a modified Vosper boat. The Vosper boats built in the United States were intended solely as lend-lease boats, and not intended to be used by the Unites States Navy. Some were not transferred as intended, and were actually commissioned in the U.S. Navy for a short period.