You might think achieving USCG compliance for your vessel is complicated. You may think it requires significant time and investment. Maybe you think it’s impossible? But, if you have one vital component on board, you could achieve it in a matter of minutes… Okay, let’s come clean. 

All it takes, as Subsea7 recently found out, is a quick visit from an Optimarin engineer next time your vessel hits port.

Easy does it

Subsea7’s Seven Pacific, an advanced offshore construction and pipe-laying vessel, has had a 667-m3 OBS fitted since 2015. To ensure total global compliance and optimal fleet flexibility, this segment-leading owner requested our USCG upgrade service.

As Seven Pacific Chief Engineer Oddgeir Refvik describes, the whole process was “very straightforward”.

“It was basically a software modification,” he says. “The service engineer brought an updated manual and information plate onboard, upgraded the software and then took us through the changes. That was it. 

“We can now easily change the operation mode of our Optimarin BWT system between IMO or USCG mode.”





Just what shipowners need in today’s competitive, regulatory stringent shipping environment.

With you all the way

Vessels sailing in U.S. waters will be required to adhere with United States Coast Guard (USCG) ballast water discharge standards and the United States Environmental Protection Agency (USEPA) Vessel General Permit (VGP), in addition to State ballast water regulations.

We understand the long-term value shipowners and operators are looking for from their BWT systems. We have the same long-term focus ourselves.


We don’t constantly change technology or release new system variations. We have found what works best and we have stuck to it – refining it where necessary, investing in enhanced development and performance, but keeping to the same winning formula. 

That allows for easy upgrades (rather than costly replacements) and reliable operations, even for systems fitted many years ago. 

Excellence as standard

As our CEO Tore Andersen comments: “It’s a long-term strategy for owners with long-term assets, offering, as Subsea7 understands, long-term value.”

And they seem to appreciate that day-in day-out predictable performance, as Refvik observes: “It is a system that have been working very well since installation. 

“The required maintenance is low while the spare parts required onboard are minimal. The ballasting itself is easy to perform from the local panel on the system or, as we mostly use it, via integration into our marine automation system K-Chief 700.”

He concludes: “I have formed a good impression of Optimarin – from the installation of the system three years ago, to its first service visit this year, and now the USCG upgrade.”

Exactly what we want to hear.

We’ll focus on providing the same standards of excellence, for Subsea7 and all our global customers, far into the future.

Happy (compliant) sailing everyone!