Flood/drainvalve fwd engineroom.
With the help of U-historia I believe I might have located the fwd engine room drain/floodvalve. First of all there are only ordinary valves draining batterycompartment into the engineroom, draining of the waste watertank is done via an ordinary checkvalve up fwd PO mess or probably in the controlroom. Flooding of the batterycomp. is done from the valve fwd PO mess. The only handcontrolled checkvalve operated from the adjacant compartment in fwd engineroom is possibly situated up towards the bulkhead of the main batteryswitch compartment no. 2, stb side of the galleydoor. Allthough the hand operatingshaft through the bulkhead is indicated by U-historia to be right down of the dooropening, I think it might be a fair chance that same could be situated in the switchcompartment, I cannot figure out it is outside. Thus this is no 3 of these 4 valves.
Tore