Raymarine Type 1 Pump 12V

The Raymarine Type 1 Pump 12V (M81120) is a reversing hydraulic pump engineered for marine steering systems that employ 4.9 to 230 cubic centimeter hydraulic steering rams. This is a precision-built component designed to provide responsive helm control in demanding offshore and coastal applications where reliable power steering is mission-critical.

The pump's 12-volt architecture integrates seamlessly with S1/S1G and S2/S2G corepack systems, allowing operators to match pump capacity precisely to their ram configuration for optimal response curves and stall pressure ratings. Compact dimensions—5 x 4 x 10 inches—enable installation in confined engine compartments typical of patrol vessels and offshore work boats. The 5.6-pound weight minimizes structural load while maintaining the robust displacement and pressure characteristics required for heavy-duty steering actuations.

Operators managing commercial fishing vessels, coast guard craft, or offshore supply boats depend on hydraulic steering systems that respond instantaneously under high sea states. The Type 1 pump's reversing capability ensures smooth helm transitions—critical when maneuvering in tight channels, docking, or responding to emergency course corrections. Compatibility with multiple corepack generations reduces inventory complexity and streamlines system upgrades without requiring full steering architecture replacement.

Raymarine's pump architecture represents the marine hydraulic baseline for professional steering systems. The Type 1 series is widely deployed across commercial and military maritime platforms where steering precision, pressure stability, and long-service intervals are non-negotiable specifications.