Home›Browse›SM U-4🌐EnglishEnglishDeutschFrançaisPolskiفارسی中文EntityQ7391581· pop 6· linked from 56 articlesSM U-4Sign in to saveAustro-Hungarian Navy's U-3-class submarineOn the mapAvailable in 5 languagesFinnishHungarianPolskiفارسیvia Wikidata sitelinks · CC0