Norway's Reach Subsea has entered into short-term contracts for a trio of ships.
It said the 7,000-dwt Havila Subsea (built 2011), the 2,800-dwt Edda Fonn (built 2003) and the 3,100-dwt Olympic Delta (built 2015) have secured deals covering 100 firm days in total.
There are 50 optional days attached.
The charterers are unnamed major oil companies and international contractors.