Sea1 starts building second of four offshore energy support vessels

Norwegian offshore services provider Sea1 Offshore has cut the first steel for the second of four offshore energy support vessels (OESVs) it has on order with a shipyard in China.

Sea1 Offshore placed the order for the first two OESVs with Chinese shipyard Cosco Shipping in November 2024, with the contract for the construction of two additional vessels following this March.

The Norwegian company reported today, December 16, that the steel cutting for Sea1 Citrine had been completed, exactly three months after a steel-cutting ceremony on September 16 marked the start of construction of the first vessel, named Sea1 Diamond.

Furthermore, according to Sea1 Offshore’s social media, the keel laying ceremony for Sea1 Diamond took place some two weeks ago, during which two accommodation blocks (2D2P and 2D2S), each weighing