Sailing tools and trainers

Set gain and clutter, measure with the EBL and VRM, identify echoes and spot collision risk in twelve missions.

Twenty random questions a round on using the weather tools and the radar, with every picture taken from the real tools.

Height of tide at any hour with the rule of twelfths, plotted on a tidal curve.

Who gives way, navigation lights from every angle, and sound signals.

Name the mark, pick the safe side, read cardinal lights at night and vessel day shapes.

A digital Portland plotter and dividers on a practice chart: bearings, distances, fixes and EPs.

Wrecks, rocks, tidal diamonds and chart abbreviations, as a quiz or flashcards.

An interactive Beaufort scale, a Shipping Forecast decoder and a go / no-go check.

Work through a passage plan step by step, from route to bolt holes.

Eight essential knots, photographed and animated step by step.

Sail plan and trim settings for any wind speed and point of sail.

Alfa to Zulu, radio numbers, and spelling boat names for the VHF.

VHF calls, call signs and MMSIs through static, fading, engine noise, wind and overtalk. Four levels, up to typing what you heard.

Nautical terms explained in plain English, each with related lessons.