 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating whether the merger of International Seaways, Inc. NYSE: INSW and Diamond S Shipping Inc. is fair to International Seaways shareholders. Upon completion of the merger, International Seaways shareholders are expected to own approximately 55.75 of the combined company. Halper Sadeh encourages International Seaways shareholders to click here to learn more about their legal rights and options or conta 