Sea water is all very corrosive; the precise composition is not significant. Steel structures are cathodically protected with impressed current and/or sacrificial anodes, usually aluminum. For equipment to be cooled with seawater there are a few choices ;However, for the Navy where reliability is more important than the cost , titanium would be the material of choice ( Type 2 , but types 1 and 3 or the Pt alloy - forgot the number- are also good).The variables for sea water corrosion are : temperature, velocity, sediment, and marine growth, not composition. Inco/Huntington probably evaluated every possibility for sea water corrosion at the La Que labs in Wrightsville Beach NC. Work done before Harvard MBAs' in management eliminated "research" from "research and development". Papers will be published under "Seahorse Institute" and NACE ( National Association of Corrosion Engineers). NACE will have various current publications available for sea water corrosion ( located in Houston TX). Most of this R & D was done before the internet so it won't be available on-line.