"> MacTaggart Scott DE-Val 300
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MacTaggart Scott

DE-Val 300

The MacTaggart Scott DE‑Val 300 is a hydraulic ram‑type steering gear designed for large tankers and bulk carriers, featuring dual redundant pump units to ensure continuous steerage. The supplied category identifies the equipment as Ram-Type Steering Gear, and it is normally installed in the steering-gear room, bow or stern thruster compartment, or propulsion-control system according to the listed equipment. In that listed role, its primary purpose is to control vessel heading or generate transverse or directional manoeuvring thrust. Ram and rotary-vane steering gears, tunnel thrusters and retractable azimuth units use different actuators and propulsors but all depend on reliable hydraulics or electric drives and feedback control. The model designation identifies the listed configuration, but no additional performance, approval or construction detail is inferred from the model code beyond the information supplied in the source record. The source metadata also states power: 75.0 kW; capacity: 3000 kNm torque. For exact ratings, dimensions, settings, capacities, materials and variant-specific limits, refer to the manufacturer documentation for the exact figure.

75.0 kW
Power
3000 kNm torque
Capacity
Hydraulic oil
Medium

Components & Design

Component data being added…

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Common failures & inspection points

Hydraulic leakage or low oil level causes reduced pressure, slow movement or low-level alarms
Pump, motor or drive faults cause loss of one power unit, reduced thrust or failure to move the rudder
Control, feedback or position-sensor faults cause hunting, incorrect indication or failure to reach the commanded position
Bearing, seal or mechanical wear causes vibration, leakage, backlash or abnormal noise
Air ingress, contamination or cooling faults cause unstable hydraulic or drive performance and protective trips

Service & Maintenance

Inspect power units, oil or lubrication condition, actuators or thruster drive, seals, feedback transmitters, controls and structural connections. Test main, standby and emergency arrangements according to the approved vessel and class procedure. Check leakage, vibration and response throughout the operating range. Refer to the manufacturer documentation for the exact figure for pressure, alignment and wear limits.

Suppliers & Spare Parts

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Replacement Parts

Carry hydraulic filters, seals, hose or pipe repair provisions, motor-control spares, feedback sensors, relays, fuses and critical valve or drive service parts.
Equipment Model #390 · ✓ still in production