A fish-farming superyacht developed by Ocean Ark Tech of Chile (OATECH) and its strategic ally, London-based Ocean Sovereign, is one step closer to delivering fish to market after winning a key approval from marine classification society, RINA.Registro Italiano Navale (RINA) announced the Approval in Principle (AiP) of the new-concept offshore fish-farming system, Ocean Ark. The vessel delivers a new approach to aquaculture and looks set to disrupt by dramatically improving fish health…