A half plate sheet film negative. On board the Type 12 frigate Yarmouth (1959) alongside the south-east corner of the fitting out basin in John Brown & Co Ltd's shipyard at Clydebank. In the main passage on 2 deck at station 20 looking forward. On the right are the door to the C.P.Os mess, an emergency change over switch and connection box, fuse panels, a breathing apparatus locker with hoses wrapped around it, a rope ladder, emergency connection box, the air filtration unit and an emergency lamp. On the left are a fuse panel, connection panel, the door to the P.Os. mess and a fire extinguisher. In the foreground is the hatch to 3 deck and beyond it is the hatch over the Type 174, Hull Outfit 20 asdic trunk. The watertight door at 16 station is open and beyond it is the door the the crew's W.Cs.