Two groups
Gunboats and captured corvettes
K1 through K4 came from occupied European navies, while PA-1 through PA-4 were incomplete French Flower-class corvettes continued under German control.
Captured gunboat
K1
1941–1945
Captured gunboat
K2
1942–1947
Captured gunboat
K3
1942–1960
Captured gunboat
K4 Lorelei
1943–1954
Captured gunboat
PA-1
1944
Captured gunboat
PA-2
1943–1944
Captured gunboat
PA-3
1943–1944
Captured gunboat