wetline

noun3

1. •
   A line that has been doused with water in order to stop the advance of a fire.

   • In cheatgrass the wetline technique has proven to be successful and is equally useful in other light to moderate grass fuels on relatively smooth terrain. — 1982
2. •
   An unprotected pipe located beneath a cargo tank that is used for loading of liquid products such as petroleum.

   • […] safety risks associated with the transportation of flammable liquids in unprotected product piping – known as wetlines – on DOT-specification cargo tank motor vehicles. — 2003
3. •
   [before a noun] (Australia) Commercial line fishing that does not use a longline.

   • Its below decks layout has been redesigned to suit its role as a modern wetline or rock lobster fishing boat. — 1983