Dubai's Topaz Energy and Marine has stretched charter deals for 12 OSVs with BP.
The ships are working for BP Exploration in the Azerbaijan sector of the Caspian Sea.
Seven of the units will stay on charter until 2025, with three more contracted through to 2023 and the other two to 2022.
Two-year options are included for all ships, which are a mix of large anchor-handlers, platform supply vessels and emergency response and recovery vessels.
