Fred Koehler, an electronics repairman from Coral Gables, Florida, sold his electronics shop to finance the completion of a two-man deep-sea submersible called Seacopter. He planned to dive to Titanic, enter the hull and retrieve a fabulous collection of diamonds rumoured to be contained in the purser's safe. However, he was unable to obtain financial backing for his planned expedition.[19] Another proposal involved using a semi-submersible platform mounted with cranes, resting on two watertight supertankers, that would winch the wreck off the seabed and carry it to shore.