Across a variety of offshore industries, there is a push to reduce vessel hours and offshore man hours to reduce cost, risk and weather dependency. Reduced cost of battery capacity and increased 4G and satellite communication infrastructure opens up the opportunity to operate systems located offshore, remotely from shore. In addition to reduced cost and risk, an adaptation to remote operation can greatly increase utilization of equipment, providing for 24/7 availability, during all weather conditions.

For systems consuming an average of 500W or less, power supply in the form of battery packs in combination with PV panels, can provide for sufficient uptime and availability. However, offshore operators are looking to deploy more conventional systems offshore for resident, autonomous operation, prompting the need for high power energy supply, a reliable, low latency and high capacity communication link to shore, as well as cost efficient installation methods.


BOLT Sea Power develops offshore power units that aims to deliver all three capabilities. Our on board winch currently provides for both power production and station keeping. However, in collaboration with world a leading suppliers of transmission components, we are in the process of implementing the ability to transfer power and communication through the winch line, from surface to seabed. The winch, already operated as a heave compensated anchor system, also has the inherent capability to install equipment on the sea floor, allowing for a cost efficient installation method.


ROVs and AUVs are traditionally operated from vessels hovering above, making for a vessel- and labour intensive operation that is also sensitive to weather. Several operators are adapting their vessels to operate  autonomously with on board battery packs for resident deployment and remote operation. This makes for a complete game changer in availability and cost. However, as power consume is in the several kW regime, the finite energy contained in battery packs puts a serious constrain on operational duration and work capabilities of the subsea vessels.

A power unit from BOLT Sea Power will feed power for battery charging and provide a communication link to shore, enabling true and unconstrained remote operation.

Download PDF - Bolt Sea Power - Power for Subsea Resident Vehicles