Ql Bow Thruster Manual [updated] [OFFICIAL]

Position the tunnel as deep as possible. The top of the tunnel should sit at least 0.75 times the tunnel's diameter below the waterline to prevent air suction (cavitation).

Check for signs of oil leakage. If your model uses an oil reservoir, verify the fluid level and color. Milky oil indicates water intrusion. Ql Bow Thruster Manual

The QL line has several models tailored to boat size and power requirements: Suitable for smaller vessels (22'-31'). Position the tunnel as deep as possible

Use high-grade, multi-strand marine copper cable. For standard runs, a minimum size of 2/0 AWG (70mm²) is common, but reference specific wattage charts to prevent overheating. Ql Bow Thruster Manual