Offshore Energy
  • Fossil Energy
  • Subsea
  • Alternative Fuels
  • Hydrogen
  • Marine Energy
  • More news
JobsNewsletter
Offshore Energy logo
Topics
  • Fossil Energy
  • Subsea
  • Alternative Fuels
  • Hydrogen
  • Marine Energy
Network
  • Offshore Energy
  • Offshore Wind
  • NavalToday
  • Dredging Today
Company
  • Advertising
  • Newsletter
  • Jobs
  • Report your news
  • Privacy

© 2026 Navingo. All rights reserved.

Home›Green Marine›International Seaways officially becomes 2nd largest US-listed tanker company
Green Marine

July 16, 2021 · about 5 years ago

International Seaways officially becomes 2nd largest US-listed tanker company

New York-based tanker company International Seaways (INSW) has completed a merger with Greenwich-based energy shipping company Diamond S Shipping.

1 minutes read
  • LinkedIn
  • X
  • Email
International Seaways
Illustration. Image by Navingo

New York-based tanker company International Seaways (INSW) has completed a merger with Greenwich-based energy shipping company Diamond S Shipping.

Following the completion of the transaction, International Seaways is now the second-largest U.S.-listed tanker company by vessel count with over 100 vessels and the third-largest by deadweight, aggregating approximately 11.3 million dwt.

Related Articles

Green Marine

International Seaways, Diamond S create 2nd largest US-listed tanker company

3 min read

As informed, the combined company will continue to operate as International Seaways and trade on the New York Stock Exchange under the symbol INSW.

International Seaways expects to achieve cost synergies in excess of $23 million and revenue synergies of $9 million, which are expected to be fully realizable within 2022.

According to INSW, the merger enhances the company’s capabilities in both the crude and product markets and creates “power alleys” for INSW in the large crude—VLCC and Suezmax—and LR1/Panamax and MR markets.

In line with the terms of the merger agreement, pre-merger INSW shareholders own approximately 55.75% of the equity of the combined company and former DSSI stockholders own approximately 44.25%.

Reach the Offshore Energy industry in one go!

Offshore Energy is read by thousands of professionals every day.

Increase your visibility with banners, tell your story with a branded article, and showcase your expertise with a full-page company profile in our business directory.

CONTACT

Follow Offshore Energy on:

Filed under

Green MarineBusiness Developments & ProjectsCollaborationInfrastructureMarket OutlooksOutlook & StrategyVessels

Home of Energy Transition

Join thousands of industry professionals who start their day with our newsletter.

Trending Now

  1. 1SED Energy Holdings and Ventura Offshore to unite into one
  2. 2New Boskalis rock installation vessel starts work offshore Poland
  3. 321 companies apply for Norway’s new oil & gas exploration areas
  4. 4Spanish shipyard launches its largest-ever vessel, built for Østensjø Rederi

Home of Energy Transition

Join thousands of industry professionals who start their day with our newsletter.

Subscribe free