Standardized Allied boats helped an exile navy keep trained crews fighting after losing access to domestic support. Polish crews adopted Royal Navy submarine practice and used U-class boats aggressively in the Mediterranean. Dzik sank eighteen vessels, used her deck gun against surface targets, and twice carried out boarding actions. A compact, maintainable wartime boat could be more useful than an impressive orphan design without spare parts.
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Polish crews in British U- and S-class submarines
Polish submariners continued the war in British-built boats, including Sokol and Dzik, whose Mediterranean service earned a strong reputation.