 "Nettlebeck", "Brommy" and "Van der Groeben" were depot ships for the 1st, 2nd and 3rd R boat flotillas, respectively.The 1st and 3rd flotillas were at Kiel, and the 2nd was at Cuxhaven.HMS "Ambitious" (F169), "Celebrity" and "St. Tudno" served as depot ships for minesweepers.