international ship certification agency from the Latin for “truth”; ICESHELF (N. Impediment to a coastal docking [2 wds.]); NAVIGATION (O. Forte of Prince Henry [1394-1460]); GREED (P. Likely motive for some New World exploration); CHANTEY (Q. Sailor’s song); OUTBOARD (R. On the exterior of a hull); LIFERAFT (S. Refuge after capsizing