Intership orders two large wellboats for lice treatment


Norwegian wellboat company, Intership has ordered two vessels from Turkey´s Sefine Shipyard, to be used for a freshwater-based sea lice treatment.

The vessels will have well capacities of 6,500 m3 and 4,000 m3. The vessels will have hybrid propulsion systems, including substantial battery power, which meet the highest environmental standards and are outfitted with cutting edge equipment.

The wellboats have been specially designed to treat farmed salmon for lice and amoebic gill disease (AGD) using large quantities of fresh water produced on board.

Both are due for delivery during Q3 2024, with the larger vessel contracted on a long term basis to a major salmon farming company.

The vessels are designed by Salt Ship Design. The shipbuilding contracts with Sefine have been facilitated by shipbroker MIL Shipping.

Intership currently has another two vessels under construction at Spain’s Zamakona yard, with the first one due for completion in Q3 2022 and the second in Q2 2023. Both these vessels are also contracted to salmon farmers from delivery.

The two Sefine orders represent an investment of approximately NOK 1.2 billion. Combined with the Zamakona orders, the total investment is close to NOK 2 bn.

After the delivery of the newbuilds from Sefine, the company’s total fleet capacity will be about 26,200 m3 across 11 well boats.

COO Kjetil Opshaug said: “With our method for fresh-water treatment, we achieve a very good score for all welfare indicators, and the fish resume feeding immediately after treatment. The method is beneficial for fish welfare, environment and costs.”

Intership COO Kjetil Opshaug


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