"It doesn't hate you. It doesn't love you. It doesn't even know you exist. When it destroys/capsizes your boat your boat didn't even cause a change in its movements.
I am a sailor and I am in love with a cold heartless b#tch who couldn't care less whether I live or die."
Not a bad idea but you might want to avoid the word dumping.
Burial at sea is the more common term.
More likely than not the writer was referring to Hawley Harvey Crippen. Check out the article at www.thehistorypress.co.uk/articles/the-notorious-case-of-dr-crippen/