O
OAKHAM or OAKUM to OPEN with a place
OPENING to OUT-FIT
OPENING
ORDINARY
ORLOP
OVER-BOARD
OVER-CAST-STAFF
OVER-HAULING
OVER-MASTED
OVER-SETTING
OUT
OUT-FIT
OUT OF TRIM to OWNER
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OVER-CAST-STAFF
OVER-CAST-STAFF, (trebuchet, Fr.) a scale, or measure, employed by shipwrights to determine the difference between the curves of those timbers which are placed near the greatest breadth, and those which are situated near the extremities of the keel, where the floor rises and grows narrower.
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© Derived from Thomas Cadell's new corrected edition, London: 1780, page 208, 2003
Prepared by Paul Turnbull
http://southseas.nla.gov.au/refs/falc/0914.html