Watertight doors
vertical sliding WT door,
horizontal sliding WT door,
dog,
Horizontal sliding watertight door
A.door-operating cylinder,
B.door-control valve, (solenoid/manual operated),
C.power unit,
D.hand pump (local),
E.stop valve (servicing),
F.combined alarm closing limit and indicator light switch,
g.opening limit switch,
H.switch strikers,
J.door stop,
K.warning plate,
L.alarm,
M.bridge controller indicator,
N.key-operated isolating switch,
P.non-return valve,
