Target position
Uses a great-circle destination calculation on a spherical earth model. Confirm datum and coordinate format before entry.
Deck tools
Calculate.
Cross-check. Go.
Planning and confirmation tools designed for a phone in the RIB. They do not replace the Race Officer’s instruction, official tables or safe judgement.
Start-line planning
A starting estimate only. Adjust for class behaviour, current, wind strength, sea state, fleet ability and event policy.
Gate-width sense check
There is no universal formula. Use class/event guidance and observe congestion; symmetry and correct alignment matter as much as nominal width.
Reach bearings
Use the published course geometry and reference tables. This is a bearing cross-check, not a full trapezoid position solution.