Diamond S Shipping Inc. (DSSI) is one of the largest publicly listed owners and operators of crude and product tankers, which ... provide seaborne transportation of crude oil, refined petroleum and other products in international shipping markets. DSSI owns and operates a fleet of 66 vessels, composed of two segments: Crude Tankers, which includes 15 Suezmax vessels and one Aframax vessel, and Product Tankers which includes 50 medium range (MR) vessels. read more