Adapted from 'The Seaman's Friend...' by R. H. DANA Jr

Dana was also the author of ‘Two Years Before the Mast’

[Dum's copy: Thomas Groom & Co., Boston 1851. 6th Edition, Revised and Corrected]

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JACK A common term for the jack-cross-trees. (See UNION.)
JACK-BLOCK A block used in sending topgallant masts up and down.
JACK-CROSS-TREES Iron cross-trees at the head of long topgallant masts.
JACK-STAFF A short staff, raised at the bowsprit cap, upon which the Union Jack is hoisted.
JACK-STAYS Ropes stretched taut along a yard to bend the head of the sail to. Also, long strips of wood or iron, used now for the same purpose.
JACK-SCREW A purchase, used for stowing cotton.
JACOB'S LADDER A ladder made of rope, with wooden steps.
JAWS The inner ends of booms or gaffs, hollowed in.
JEERS Tackles for hoisting the lower yards.
JEWEL-BLOCKS Single blocks at the yard-arms, through which the studdingsail halyards lead.
JIB A triangular sail set on a stay, forward.

Flying jib sets outside of the jib; and the jib-o'-jib outside of that.

JIB-BOOM The boom, rigged out beyond the bowsprit, to which the tack of the jib is lashed.
JIGGER A small tackle, used about decks or aloft.
JOLLY-BOAT A small boat, usually hoisted at the stern.
JUNK Condemned rope, cut up and used for making mats, swabs, oakum, &c.
JURY-MAST A temporary mast, rigged at sea, in place of one lost.
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© 2018 Duncan Linklater