GULF - A relatively large portion of sea_, partly enclosed by lando 



GUT - (l) A narrow passage such as a strait or inlet. 



(2) A channel in otherwise shallower water, generally formed by 

 water in motiono 



HARBOR (BRIT« HARBOUR) -A protected part of a sea, lake, or other body 

 of water used by vessels as a place of safety and/or for the 

 transfer of passengers and cargo between water and land carriers. 

 See also PORT. 



HEAD (HEADLAND) - A point or portion of land jutting out into the sea, 

 a lake, or other body of water; a cape or promontory; now, usually 

 specifically, a promontory especially bold and cliff -like. 



HEAD OF RIP - The section of a rip current that has widened out seaward 

 of the breakerso See also CURRENT, RIP: CURRENT, FEEDER: and NECK 

 (RIP) . 



HEIGHT OF WAVE - The vertical distance between a crest and the preceding 

 trough, (See Figure A-3) See also SIGNIFICANT WAVE HEIGHT. 



HIGH TIDE: HIGH WATER (HW) - The maximum height reached by each rising 

 tide. See TIDE. (See Figure A-IO) 



HIGH WATER OF ORDINARY SPRING TIDES (HWOST) - A tidal datum appearing 



in some British publications, based on high water of ordinary spring 

 tides. 



HIGHER HIGH WATER (HHW) - The higher of the two high waters of any tidal 

 day. The single high water occurring daily during periods when the 

 tide is diurnal is considered to be a higher high water. ^See 

 Figure A-IO) 



HIGHER LOW WATER (HLW) - The higher of two low waters of any tidal day. 

 (See Figure A-IO) 



HIGH WATER - See HIGH TIDE. 



HIGH WATER LINE - In strictness, the intersection of the plane of mean 

 high water with the shore. The shore line delineated on the 

 nautical charts of the Coast and Geodetic Survey is an approximation 

 of the mean high water line. 



HINDCASTING, WAVE - The calculation from historic synoptic wind charts 

 of the wave characteristics that probably occurred at some past 

 time. 



HINTERLAND - The r egion inland from the coast, 



A-15 



