APKPure Appを使用する
Sailing Right of Wayの旧いバージョンをダウンロードすることが可能
この単純なドリルでこれらの厄介な衝突を避ける！
Practice with a 3d sim, suitable for a first course in sailing
Rule A. Approach on different tacks - Port tack shall give way
Rule B. Approach on the same tack - Windward shall give way
NB In regatta competitions (i.e. fleet- and match racing) these correspond to ISAF rules 10 and 11.