Jack line-A strong line, or a wire stay running fore and aft along the
sides of a boat to which a safety harness can be attached. Jacobs ladder-A rope ladder. Jettison: -to throw overboard. Jetty-A man made structure projecting from the shore. Breakwater
protecting a harbor entrance Jib:
- a triangular foresail in front of the foremast. Jib-ho or Jibe-o The word from the helmsman when he turns the wheel to
begin a jibe Jib Sheet The lines that lead from the clew of the jib Jibboom
-Spar forward of bowsprit Jibe. To go from one tack to the other when running with the wind coming
over the stern Jigger-Aft sail on the mizzen mast of a yawl or a ketch. After mast
(4th mast)on schooner or sailing ship carrying a spanker. Jones John Paul-US
(Scot.-born) naval officer & hero in American Revolution; as captain of ship Junk-A native sailing
vessel common to the Far East Seas
