If the deadrise angle of your mounting location exceeds 5 degrees, you should use a fairing block to mount the device. A fairing block enables you to compensate for the hull deadrise angle to keep your compatible thru-hull transducer parallel to the waterline for increased sonar accuracy.

Before ordering, you should know the following and determine whether a Garmin fairing block will fit your need.

• Transducer model

• Hull type, material, and thickness

• Deadrise angle of the mounting location¹

• Inner and outer hull dimensions of the mounting area

• Inner and outer hull features relative to the fit of the fairing block and hardware

If a premade fairing block is not available, it may need to be fabricated.