Tides 2 : The periodic variation in the surface depth of the oceans, and of bays, gulfs, inlets, and tidal regions of rivers, caused by the gravitational pull of the sun and moon
NFPA 1405 Guide for Land-Based Fire Fighters Who Respond to Marine Vessel Fires, 2001 ed. http://www.nfpa.org/assets/files/AboutTheCodes/140 5/1405-F2005-ROP.pdf, (Guide: Land-Based Fr Fightr Who Respond to Mrn Vssl - Amer) {396 NFC}