Sea of ​​Nightmares

Four young people (two guys and two girls) decide to relax and sail on a yacht by the sea. The company arrives at the port and finds out that in addition to them, there will also be a captain on board a rather small ship, his navigation assistant Joe and some strange subject Derek, whose taking on board is explained by the captain receiving from him the money that the captain needs so much. As a result of a verbal battle between the company and the captain, they still remain on the yacht and decide to start a journey that is not limited to just sailing - the ship periodically stops and passengers go for a walk, have fun, etc. On the first night, the ship stops near an uninhabited island, nicknamed Pirate Island. The company sits by the fire and discusses the topic of death, or rather, who is afraid in any way of dying.

The next day, the ship stops near the coral island where passengers are engaged in diving. Soon it turns out that the navigator of the ship Joe was missing, and with all the necessary equipment, but most of the girls don't give a damn about it - they calmly rest. And then the sequential killings of the main characters begin.

Sea of ​​Nightmares on the Internet Movie Database