IN this small treatise the Deviation of the Compass in iron ships is professedly dealt with as a matter of observation, and distinct generally from magnetic science and the mathematical investigations ...

THE Admiralty Manual of Compass Deviation with its auxiliary Eiemenatry Manual would, after some lapse of time, appear to have been turned to good account by teachers of navigation. The small volume ...

Thanks to everyone who took the time to reply to last week’s survey on swinging our compasses. We got a large and fun response. First, 44% do swing their compass from time to time and 77% do it ...