It's been a long day, I'm still nowhere near that bloody rosette and I'm feeling slightly cranky about it, so here is another useless suggestion (I thought it meant something quite different, but wrong language!), a spelling variation that has some backing from the Shorter Oxford:
lateen /0laˈti:n/ adjective & noun. Also latine, latteen. M16.
[ORIGIN French latine (in voile latine Latin sail, so named as used in the Mediterranean) fem. of latin Latin adjective.]
► A adjective. Designating a triangular sail suspended by a long yard at an angle of about 45 degrees to the mast, or a vessel, yard, etc., possessing or used with such a sail. M16.
lateen mizzen, lateen rig, etc.
► B noun. A lateener. M19.
lateener noun a vessel with a lateen rig L19.