Tactical Olympic Compass
Combine the functions of : Main steering compass, from card horizontal surface. Course is read from the lubber lines mounted in the lower part of the bowl. Tactical compass, from card vertical section (direct reading). Tactician-crew only needs to memorise one figure for the 3 legs of an olympic course. Flat card, slightly dished. Apparent diameter of the card 85 mm. 5 lubber lines. Weight 375 g.
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