The F/V King Island, built by Bay Welding, has an 18 ton RSW system on board.

The F/V King Island, built by Bay Welding, has an 18 ton RSW system on board.

self contained RSW Systems

from 3 ton - 50 HP Nominal Chilling Capacity

Self-contained refrigerated seawater units from IMS are extremely compact and easy to install. These RSW systems are completely assembled, charged with refrigerant, tested at our Seattle manufacturing facility and shipped ready to install.

Sometimes the best solution is multiple RSW systems. Systems can be housed within shrouds, used on deck and removed at the end of a season. The variations are as endless as the characteristics and needs of the vessels and processing plants that use them.


Electric, Hydraulic or Diesel Drive

Due to the number of variables involved, the answer about how to best drive the RSW system on your particular vessel is best addressed by speaking directly with one of our sales staff. In some cases, instead of running an RSW system hydraulically off the main or auxiliary engine, boat owners prefer to use an IMS diesel driven RSW, which saves on fuel by eliminating the need to run the main engine while the RSW system is in operation. Our systems come in a range of sizes to meet the unique needs of each customer:

  • Electric systems 3 ton to 50 HP

  • Hydraulic systems: 3 ton to 18 ton capacity

  • Diesel systems: 8.5 ton to 18 ton capacity

  • Larger self-contained and custom systems available upon request


Condensing Units with Remote-Mount Chillers

IMS condensing units are complete and ready for hook-up to a remote mounted chiller – providing a narrow, compact system that is available with either electric, hydraulic or diesel drive power options.

Installation is straightforward and economical. Our system includes the chiller, chiller brackets, bulkhead penetration and remote control package.


RSW Product Info Sheets