In these days of GPS navigation, people tend to ignore changes in deviation caused when the boat heels and lumps of structural iron alter their relationship with the compass. To access this …
Don’t believe the helmsman
Every skipper should be aware that helmsmen or even women rank among the world’s most chronic liars. To access this post, you must purchase The Sea Chest membership (Annual Payment) or 1 …
Datums for GPS
If you’re still struggling with chart datums for GPS, YM’s postbag indicates that you’re not alone! Search an Admiralty chart and you’ll find a statement like this one To access this post, …
