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Gleaves Order Addendum No. 3, Diagram

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Title: Gleaves Order Addendum No. 3, Diagram
Caption: This diagram updates the Chief of Naval Operations' guidance on a proper "zig-zag" pattern Zig-zagging helped ships to evade submarine attacks, since their seemingly erratic movement made it more difficult for U-boat captains to get a fix on his target.
Original Location: Rear Admiral Albert Gleaves, Commander, Cruiser and Transport Force, Order for Ships in Convoy, Addendum No. 3
Original Date: 1917-12-03
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