The Integrated Marine Systems (IMS) design and manufacturing facility was originally located in the Port of Port Townsend Boat Haven in Washington State but relocated to Seattle in 2013. With a background in commercial fishing in Alaska, the principals at IMS at first focused on designing and manufacturing marine refrigeration equipment tailored for that market. The company introduced its first product, the Port Townsend HydroChiller, in 1989.

The success of the HydroChiller fueled the engineering dreams of company founder Mark Burn. Since then, IMS has built a solid reputation on “making refrigeration simple.” In addition to serving commercial fishermen, the IMS product line has expanded to provide chilling and freezing solutions for seafood and food processors in many markets. Refrigeration equipment from IMS is now being sold in Alaska, the West Coast, Gulf of Mexico, the East Coast and in select locations internationally. IMS equipment is known for the ease with which it integrates into the boat or plant, as well as its ease of installation, operation and maintenance.

In early 2009, IMS acquired Wescold. Wescold’s refrigeration product lines and parts infrastructure serve to compliment the core product development and manufacturing business of IMS. In addition to working with the seafood industry since 1913, Wescold has served the agricultural market throughout its long history in the refrigeration business. Manufacturing of select Wescold products is now done at the IMS facility. The IMS / Wescold Seattle office handles sales and also speeds parts delivery with its proximity to the airport. Parts and equipment are also shipped from this location.

Industry Partners – Educational Outreach

IMS’s history includes an ongoing commitment to help improve quality and profitability for commercial fishermen and processors. Believing that knowledge means empowerment, IMS regularly partners with non-profit organizations, educational institutions and fishermen to share knowledge with the industry. Informational letters about our activities from some of these industry partners are available here.

Washington Sea Grant Marine Refrigeration Workshop at IMS

West Coast and Alaska

IMS also provides educational information to fishermen about preparing vessels for refrigeration systems, using chilling and freezing equipment onboard and basic repair/maintenance procedures. IMS has given marine refrigeration workshops for tuna fishermen at the Western Fishboat Owners Association (WFOA) conferences. In spring of each year, IMS works with Washington Sea Grant to hold refrigeration workshops at the IMS manufacturing facility. In Alaska, IMS works with the Alaska Sea Grant Marine Advisory Program to provide classes at various locations, bringing hands-on instruction to remote areas of the state.


In the Gulf of Mexico, IMS works with the Louisiana Seafood Promotion & Marketing Board and other local nonprofit organizations to help improve the quality and marketability of wild Louisiana shrimp. Drawing parallels between the tremendous growth of the Alaska seafood industry – with products like Copper River Salmon – to opportunities for marketing high-quality shrimp in the Gulf, IMS has made presentations at a number of conferences and for the Governor’s Louisiana Shrimp Task Force.

Factory Training Increases Support for Fishermen

Fishermen who have expressed interest in learning the marine refrigeration business have participated in long-term training at the IMS facility, working in the off-season on the production line to learn the equipment from a manufacturing perspective. When they are on the fishing grounds, they assist other fishermen. Fishermen’s News magazine ran a story about three of the on-the-job trainees at IMS.

From Happy Customers

The 15-ton diesel-drive RSW that I bought from IMS paid for itself in the first year. The unit chills down fast. I have a 30,000 lbs. fish hold and the system brought it down 6 degrees an hour. I'm really satisfied with the both the unit and the service from IMS. But I've never had much of a problem - the unit pretty much runs itself!”

"Eddie" Pestrikoff, Owner, F/V Melina

After looking at the albacore in the hold, I was amazed at how good the color was - bright blue. The IMS Hatch Mount Blast Freezer is a slick piece of equipment. It works great. The buyer's inspector stated that the blast frozen fish in my hold were the finest fish he had seen all year.”

Tony Jones, F/V Dreamboat Annie

The 18-ton electric RSW from IMS has performed flawlessly for the past three years. There's been no maintenance; I've just changed out the zincs and it has a good screening system. The unit brings temperatures down fast, with more than enough refrigeration for the 55,000 lb. hold. I am very pleased!”

Mark Edens, Owner, F/V Lady Kay

IMS's chiller is such a quality system. I congratulate myself every summer for making the investment. You should be justifiably proud of the system you have designed and the company you have built. It is a pleasure doing business with you!”

Ross Kendall, Set Net Site

When we ordered the IMS 50-ton deck mount unit, we were under the gun ... It was amazing ... we had plenty of time to learn it, run it and test it. Without IMS, we would not have made our charter.”

Cathy Hansen, manager, F/V McKinley

With a premium paid for refrigerated fish, I recouped my investment within the first year. Ever since then, it's just been money in my pocket.”

Joe Hinton, F/V Menusa

'Never bought fish this cold,' stated the Japanese broker when purchasing -40 degree F blast frozen albacore from the F/V Evolution. John equipped his tanked vessel with an IMS Hatch Mount Blast Freezer for easy seasonal conversion to the albacore fishery. When buying John's albacore, the Japanese broker said he was not used to buying fish that cold from this coast. He ordered a special trailer to hold them since they were so cold. Referring to his new blast freezer, John said, 'IMS is great. When you get good equipment, then you have what it takes to meet market demand.'"

Jon McMillan, Owner & Skipper, F/V Evolution

I like the IMS unit because it's so compact and I installed it myself. I do not believe anybody chills water down as fast as I can...”

Jerry Hatton, F/V Primo Lai

I've only got good things to say about the IMS RSW system I use for brine-freezing albacore. It's compact enough to fit on my boat and I remove it at the end of the season. I turn it on and turn it off ... that's all I do. It's easy to operate, does all that IMS said it would and more! There's enough to worry about with catching fish... don't need to worry about freezin' 'em!”

Kris Samuelson, F/V Dos Ninas

Switching to all-RSW allowed us to produce higher quality fish and access new markets not available to fish that haven't been chilled at point of harvest. The single-most important thing the fisherman can do to maintain quality of the fish is to chill at the point of harvest.”

John Lowrance, Owner, Leader Creek Fisheries

IMS equipment has allowed me to deliver top product at a premium price. I have a re-newed outlook on the Louisiana Gulf fishing industry.”

Lance Nacio, Owner, F/V Anna Marie

Joe Wabey chose a 60-ton IMS RSW system. "The system worked like a dream, it's been flawless. Made our summer great. High praise for IMS and their equipment.”

Joe Wabey, Owner, F/V Arctic Eagle

I am lovin' my IMS unit. It's going on eight years now and there's been nothing to do but change belts and impellers. I fish when and where I want and am not tied to a tender. My friends have bought IMS units and they're happy too. It has only taken a few fishing season's to pay for itself and now I'm enjoying the extra money it generates for me.”

Mark Hofstad, F/V Norsemen

The core temperatures on the filets were consistent. From a production standpoint, the FastFreeze did everything I needed. Met our freezing needs and produced a high-quality product.”

Mike Briski, Production Manager, Peter Pan Seafoods Port Moller Plant

IMS refer systems have a proven history. I've used them before - they're 'Plug and Play'. They've all worked good. Nothing I've had to worry about.”

Ray Wadsworth, F/V Liahona

My titanium chiller system from IMS works great! We are able to fish offshore, stay on the grounds longer and deliver outstanding quality lobster. Our self-contained refrigeration system was easy to install - and is a breeze to operate - saving us time and money. I originally bought from another vendor in New England, thinking it might be better to buy local for better service. But I was wrong. When I later bought a system from IMS, the customer service was much better: heads above the service you generally find today anywhere. The product was also better: built as a compact and easy-to-use unit. My first product had not been well-integrated into the boat.”

Robert Colbert, F/V Miss Julie

IMS is local and well-known. Their systems are reliable and maintenance-free - which is a big issue for me. I know that if I do need parts, I'll get fast delivery. Other vendors have problems with that!”

Ron Harper, F/V Pacific Gem

It's easy to install. The system can be retrofitted in an existing boat in about four days. It's really compact and it makes refrigeration simple.”

Paolo Jurkovich, F/V Branko J

The 7.5-ton RSW system has allowed us to maximize value of our fish since 2004 when it was installed. The IMS refrigeration system allows us to earn more and be proud to deliver a high quality product.”

Ray Honea, Crewman, F/V Balrog

After looking at the albacore in the hold, I was amazed at how good the color was - bright blue. The IMS Hatch Mount Blast Freezer is a slick piece of equipment. It works great. The buyer's inspector stated that the blast frozen fish in my hold were the finest fish he had seen all year.”

Dave Fee, F/V Star Polaris