Improved coastal submarine. All units were constructed at the Blohm & Voss shipyards in Hamburg and at A.G. Weser in Bremen, the boats were commissioned in 1915 and 1916.

Ship dataEdit

Endurance: 12322 km
Maximum speed: 9 kts

Armour protection
Armour: 1

1 x 8,8cm Ubts K L/3. Ammo: 150 rounds
2 x 50cm G/6 Torpedo. Ammo: 4 torpedoes

Ships in classEdit

  • UB 18
  • UB 19
  • UB 21
  • UB 22
  • UB 23
  • UB 27
  • UB 29
  • UB 40

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