1) Boston Tea Party tea 2) Cargo thrown overboard 3) Castoffs 4) Detritus adrift 5) Discarded odds and ends 6) Discarded things 7) Emergency discards 8) Evil fish 9) Flotsam partner 10) French word used in English 11) Goods cast overboard 12) Goods gone overboard 13) Goods thrown overboard 14) Goods washed ashore Found on https://www.crosswordclues.com/clue/jetsam
Jet'samJet'son noun [ French jeter to throw: confer Old French getaison a throwing. Confer Flotsam , Jettison .] 1. (Mar. Law) Goods which sink when cast into the sea, and remain under water; -- distinguished from flotsam , good... Found on http://www.encyclo.co.uk/webster/J/8
Jetsam (jettison) are goods thrown overboard in a storm so as to lighten the ship's load and later cast upon the shore. Jetsam differs from flotsam in the deliberate nature of the goods or articles being thrown overboard. Found on http://www.probertencyclopaedia.com/browse/JJ.HTM