Study Guides

A friendly guide to five knots almost every sailor benefits from learning, including the bowline, clove hitch, round turn and two half hitches, figure of eight, and sheet bend, then how the Maritime Master Knots app helps you study them in animated 3D. A learning aid only.

A learner friendly guide to tides: what causes high and low water, how spring and neap tides differ, and how the rule of twelfths estimates the height between them, plus how TideDeck and CalcDeck help you study and plan.

New to the water and keen to learn the theory? Here is a friendly, sensible order of study using our free and one-time-purchase apps, from broad foundations to focused topics like knots, buoyage, and the rules of the road.

A conceptual study guide to how anchoring works and what scope means, written to build a firm foundation for learners studying seamanship.

Learn what a tidal stream is, how it differs from tidal height, and what a tidal stream atlas shows, with study tools in the free Skipper and CalcDeck apps.