forward perpendicular
Also found in: Acronyms.
forward perpendicular
[′fȯr·wərd ‚pər·pən′dik·yə·lər] (naval architecture)
A vertical line through the intersection of the design waterline and the forward end of a ship. Abbreviated FP.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.