North Atlantic 1943: Raymond Edwards MN

#10 They must have been continuously checking their time in the convoy as have yet to see ships keeping identical time due mainly to the time being changed daily among other things. I to sailed with such a clock in the wheelhouse. The clock in the radio room had similar markings later after the war , which I believe the R /O looked after and was marked to remind him of the silence periods every half hour. As regards the zig zag clock believe from what I was retold there was some sort of alarm on to remind people when to start their zig and zag. Maybe one of those on site during the war could explain in more detail. Would be nice to know the reality’s and the advantages of such. Cheers JS.

PS I may have put this in the wrong post it was in answer to some one who mentioned sailing on a ship with the zig sag clock in the wheel house. JS. Now corrected is answer to #10 JS.