Capital Clean Energy Carriers Corp., a shipping company, provides marine transportation services in Greece. The company's vessels provide a range of cargoes, including liquefied natural gas, containerized goods, and cargo under short-term voyage charters, and medium to long-term time charters. It owns vessels, including Neo-Panamax container vessels, Panamax container vessels, cape-size bulk carrier, and LNG carriers. In addition, the company produces and distributes oil and natural gas, including biofuels, motor oil, lubricants, petrol, crudes, liquefied natural gas, marine fuels, natural gas liquids, and petrochemicals. It serves as the general partner of the company. The company was formerly known as Capital Product Partners L.P. and changed its name to Capital Clean Energy Carriers Corp. in August 2024. Capital Clean Energy Carriers Corp. was incorporated in 2007 and is headquartered in Piraeus, Greece. Capital Clean Energy Carriers Corp. operates as a subsidiary of Capital Maritime & Trading Corp.

Tsakos Energy Navigation Limited provides seaborne crude oil and petroleum product transportation services worldwide. The company offers marine transportation services for national, major, and other independent oil companies and refiners under long, medium, and short-term charters. It also operates a fleet of double-hull vessels, comprising of conventional tankers, LNG carriers, and suezmax DP2 shuttle tankers. The company was formerly known as MIF Limited and changed its name to Tsakos Energy Navigation Limited in July 2001. The company was incorporated in 1993 and is based in Athens, Greece.

Euroseas Ltd. provides ocean-going transportation services worldwide. The company owns and operates containerships that transport dry and refrigerated containerized cargoes, including manufactured products and perishables. As of March 31, 2024, it had a fleet of 20 containerships with a cargo carrying capacity of approximately 777,749 dwt. The company was incorporated in 2005 and is based in Marousi, Greece.

StealthGas Inc., together with its subsidiaries, provides seaborne transportation services to liquefied petroleum gas (LPG) producers and users worldwide. The company's carriers carry various petroleum gas products in liquefied form, including propane, butane, butadiene, isopropane, propylene, and vinyl chloride monomer, as well as ammonia; refined petroleum products, such as gasoline, diesel, fuel oil, and jet fuel; and edible oils and chemicals. It offers crude oil and natural gas. The company operates a fleet of 33 LPG carries, including six JV vessels. StealthGas Inc. was incorporated in 2004 and is based in Athens, Greece.

Imperial Petroleum Inc. provides international seaborne transportation services to oil producers, refineries, and commodities traders. It carries refined petroleum products, such as gasoline, diesel, fuel oil, and jet fuel, as well as edible oils and chemicals, crude oils, iron ore, coal and grains, and minor bulks, such as bauxite, phosphate, and fertilizers. As of April 1, 2024, the company owned and operated a fleet of six medium range refined petroleum product tankers; one Aframax tanker; two suezmax tankers; and two handysize drybulk carriers with a total capacity of 791,000 deadweight tons. The company was incorporated in 2021 and is based in Athens, Greece.

EuroDry Ltd., through its subsidiaries, provides ocean-going transportation services worldwide. The company owns and operates drybulk carriers that transport major bulks, such as iron ore, coal, and grains; and minor bulks, including bauxite, phosphate, and fertilizers. As of March 31, 2024, its fleet consisted of 13 drybulk carriers comprising five Panamax drybulk carriers, two Kamsarmax carriers, five Ultramax drybulk carriers, and one Supramax drybulk carrier with total cargo carrying capacity of 918,502 deadweight ton. The company was incorporated in 2018 and is based in Marousi, Greece.

Top Ships Inc. owns and operates tanker vessels worldwide. The company's tanker vessels transport crude oil, petroleum products, and bulk liquid chemicals. As of December 31, 2023, it had a fleet with a total capacity of 1,435,000 deadweight tonnes (dwt) consisting of one 50,000 dwt product/chemical tanker, five 157,000 dwt Suezmax tankers, two 300,000 dwt very large crude carriers, and two 50,000 dwt product tankers. The company was formerly known as Top Tankers Inc. and changed its name to Top Ships Inc. in December 2007. Top Ships Inc. was incorporated in 2000 and is based in Marousi, Greece.

Capital Product Partners L.P., a shipping company, provides marine transportation services in Greece. The company's vessels provide a range of cargoes, including liquefied natural gas, containerized goods, and cargo under short-term voyage charters, and medium to long-term time charters. It owns vessels, including Neo-Panamax container vessels, Panamax container vessels, cape-size bulk carrier, and LNG carriers. In addition, the company produces and distributes oil and natural gas, including biofuels, motor oil, lubricants, petrol, crudes, liquefied natural gas, marine fuels, natural gas liquids, and petrochemicals. It serves as the general partner of the company. Capital Product Partners L.P. was incorporated in 2007 and is headquartered in Piraeus, Greece.