after-perpendicular

after-perpendicular

[′af·tər‚pər·pən¦dik·yə·lər]
(naval architecture)
A vertical line through the intersection of the design waterline with the after-side of the straight portion of the rudder post of a ship. Abbreviated AP.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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