History & Modifications
K18:
K18 is commissioned in the Northern Fleet.
K51:
K51 has been in refit since 1993 and may not return to service.
K64:
K64 is commissioned in the Northern Fleet.
K84:
K84 is commissioned in the Northern Fleet.
K114:
K114 is commissioned in the Northern Fleet.
K117:
K117 is commissioned in the Northern Fleet.
K407:
K407 is commissioned in the Northern Fleet.