Item 01: J. E. Morrison diary, 13 October 1917-29 October 1918 - Page 60
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[Page 60]
6 of our firemen failed to be aboard at the appointed time after shore leave. Were fined by the British Consul £3 & each & similar on the other ships. The stokers have on board caused serious trouble on board during the last 3 months whilst in other departments every thing has gone on smoothly.
21 [Apr]
Dozens of (Allo) submarine warnings by wireless some within a few miles whilst others a long distance off. Also 5 wrecks reported floating about derelicts.
Mod. Gale & rain squalls. Distroyers well ahead both sides & astern.
Convoy placed
[sketch of convoy formation]
Zig Zag day & night. The zig zag generally 10° more angle day & 10° less at night viz. 20 & 30, 30 & 40 etc.
5% lose viz. for every 100 mls. traversed = 95 good.
[sketch of zig zag sailing pattern]
The zig zag is altered each trip.
Another example
[sketch of zig zag sailing pattern]