I just started the Heart of Stones quest line, and after

killing the frog king I was abducted onto a ship. This ship crashed

and when landing ashore I lost my chest amor.

It was a fully upgraded and mastercrafted Witcher's amor, so I am quite fond of it. Yet I cannot find it my inventory nor in the loot sorounding the ship.

Is it gone or can I get it back? If so, where?