Wing sail-assisted LNG carrier design integrates forward bridge

Samsung Heavy Industries (SHI) has received Approval in Principle (AiP) from the Korean Register (KR) and the Liberian Registry for its innovative LNG carrier design, featuring wing sails and a forward bridge placement to tackle key operational challenges.

The wing sails, described as an “eco-friendly auxiliary propulsion system,” generate thrust through lift created by pressure differences across their structure.

SHI stated the forward bridge placement “effectively resolves the major navigation visibility challenges commonly encountered with wind-assisted propulsion systems.”

The design also integrates SHI’s proprietary SAVER air resistance reduction device that promises to enhance propulsion efficiency and reduce greenhouse gas emissions.

“We believe it will make a significant contribution to helping the shipping industry reach carbon neutrality,” said KR’s chief technical officer Kim Yeon-tae. 

The Liberian Registry also endorsed the design, with Liberian Registry executive vice president Thomas Klenum saying “Although ships have been using the wind to sail the oceans for over 5,000 years, it is new and innovative to use wing sails on ocean-going cargo ships, especially LNG carriers.”

SHI’s plans include expanding the wing sail technology to ammonia and carbon dioxide carriers, in line with growing demand for wind propulsion systems.

SHI executive vice president and head of technology development Jang Hae-gi stated: “Wind power, being both infinite and emissions-free, is a crucial pillar for achieving carbon neutrality in the shipbuilding and the shipping industry.”