Liquefied natural gas (LNG) is natural gas (predominantly methane, CH4, with some mixture of ethane, C2H6) that has been cooled down to liquid form for ease and safety of non-pressurized storage or transport. It takes up about 1/600th the volume of natural gas in the gaseous state (at standard conditions for temperature and pressure).
A natural gas vehicle (NGV) is an alternative fuel vehicle that uses compressed natural gas (CNG) or liquefied natural gas (LNG). Natural gas vehicles should not be confused with autogas vehicles powered by liquefied petroleum gas (LPG), mainly propane, a fuel with a fundamentally different composition.
S-class ferries are roll-on/roll-off (RORO) ferries operated by BC Ferries in British Columbia, Canada. They are the largest ferries in the BC Ferries fleet. The class comprises two ships, Spirit of British Columbia and Spirit of Vancouver Island, which were completed in 1993 and 1994 respectively. They serve the ferry route between Tsawwassen and Swartz Bay. In 2017, the class underwent conversion to a dual-fuel propulsion system that would allow them to use either marine diesel fuel or liquefied natural gas.
Marine propulsion is the mechanism or system used to generate thrust to move a watercraft through water. While paddles and sails are still used on some smaller boats, most modern ships are propelled by mechanical systems consisting of an electric motor or internal combustion engine driving a propeller, or less frequently, in pump-jets, an impeller. Marine engineering is the discipline concerned with the engineering design process of marine propulsion systems.
An LNG carrier is a tank ship designed for transporting liquefied natural gas (LNG).
Spirit of Vancouver Island is an S-class ferry, part of the BC Ferries fleet. Along with MV Spirit of British Columbia, it is the largest in the BC Ferries fleet. The ship was completed in 1994 and serves the Swartz Bay – Tsawwassen route. In 2018, Spirit of Vancouver Island began a mid-life refit in Poland, where it was converted to a dual-fuel system to allow liquefied natural gas propulsion. The vessel returned to service in 2019.
MV Spirit of British Columbia is an S-class ferry, part of the BC Ferries fleet active along the British Columbia coast. It and Spirit of Vancouver Island represent the two largest ships in the fleet. The ship was completed in 1993 and serves the Tsawwassen–Swartz Bay route. In 2018, it underwent a mid-life refit that included conversion to a dual-fuel system that allows it to use either marine diesel oil or liquefied natural gas.
Natural gas was Canada's third largest source of energy production in 2018, representing 22.3% of all energy produced from fuels in the country. By contrast, the share of fuel-based energy production from natural gas in 2013 was 17.0%, indicating a growth rate of approximately 1.06% per year.
Fjord Line is a Norwegian ferry operator offering services between Norway and Denmark; in October 2020 the company announced a scale-back of operations whereby the ferry operations will only serve the ports of Kristiansand, Hirtshals, and Stavanger.
SS Bergensfjord was a Norwegian ocean liner that sailed for the Norwegian America Line to the United States. During the Second World War she was requisitioned by the British Ministry of War Transport and used as a troop ship. After the war she continued sailing as a Trans-Atlantic passenger liner, first for South American owners, then for an Israeli company.
MS Stavangerfjord is a Danish registered cruiseferry operated by Norwegian ferry operator Fjord Line. The vessel operates between Hirtshals, Stavanger, Bergen and Langesund. It is the first cruise ferry in the world powered exclusively by liquefied natural gas.
A marine LNG engine is a dual fuel engine that uses natural gas and bunker fuel to convert chemical energy in to mechanical energy. Due to natural gas’ cleaner burning properties, the use of natural gas in merchant ship propulsion plants is becoming an option for companies in order to comply with IMO and MARPOL environmental regulations. The natural gas is stored in liquid state (LNG) and the boil-off gas is routed to and burned in dual fuel engines. Shipping companies have been cautious when choosing a propulsion system for their fleets. The steam turbine system has been the main choice as the prime mover on LNG carriers over the last several decades. The decades-old system on steam propelled LNG carriers uses BOG. LNG carriers are heavily insulated to keep the LNG at around -160 °C – to keep it liquefied. Despite insulation, the LNG containment area is penetrated by heat which allows for naturally generated boil-off gas (BOG).
Oslofjord is a Norwegian registered ro-ro passenger ferry owned and operated by Norwegian ferry operator Fjord Line. The vessel operates between Sandefjord in Norway to Strömstad in Sweden.
Isla Bella and her sister ship Perla del Caribe are the world's first liquefied natural gas (LNG)-powered container ships. Isla Bella is currently used as part of the Florida-Puerto Rico trade, sailing out of Jacksonville, Florida and arriving in San Juan, Puerto Rico on a weekly basis. Both ships were built by NASSCO for TOTE Maritime Puerto Rico and replaced the last of the Ponce-class ships that were previously used for the route. They cost US$324 million to build and each is propelled by a single slow-speed engine capable of 25,191 kW at 104 rpm, which propels the ships at a maximum speed of 22 knots.
MS Megastar is a fast ro-ro/passenger (ro-pax) ferry built by the Meyer Turku shipyard in Turku, Finland, for the Estonian shipping company Tallink. The 230 million euro vessel is the first ship in Tallink's fleet to use liquefied natural gas (LNG) as fuel.
Hull 802 is a dual-fuel car and passenger ferry for Caledonian MacBrayne, currently under construction at Ferguson Marine Ltd. in Port Glasgow on the River Clyde.
The E-Flexer is a class of Chinese-built Ro-Pax ferries ordered by Stena RoRo for European line service. Twelve vessels of the class are on order, and upon delivery will be operated by Stena Line, Brittany Ferries, DFDS Seaways and Marine Atlantic. Stena Line are to take five vessels of the class, Brittany Ferries five, and a single vessel each to DFDS and Marine Atlantic, of which the latter's vessel will also be hybrid electric. All of the vessels will be delivered to Stena RoRo with the Stena Line vessels transferred to that company and the Brittany Ferries, DFDS and Marine Atlantic examples long-term chartered to those operators, with an option to purchase at the end of the charter.
The Salish-class vessels are four intermediate-capacity ferries operated by BC Ferries and were built in 2016 at Remontowa Shipbuilding S.A. in Gdańsk, Poland. They were the first dual-fuel powered vessels in British Columbia service, capable of using liquified natural gas or diesel oil to operate. Salish Orca entered service on the Comox–Powell River route in May 2017. Salish Eagle entered service on the Tsawwassen–Southern Gulf Islands route in June 2017. Salish Raven entered service for the Southern Gulf Islands on August 3, 2017. These vessels replaced Queen of Nanaimo and Queen of Burnaby.
Bergensfjord is the name of several ships:
Denmark