6.1. Measurement Steps

  1. Using the selected Controller locations from Section 5, measure the angle with a digital protractor from the running surface to the transom, perpendicular to the deadrise. See the figure below for an example of the measurement on the port Controller, outboard location.
  2. Measure the inboard and outboard ends of the port Controller area and use the larger angle in the following Sections. Round up to the nearest degree.
  3. Measure inboard and outboard ends of the starboard Controller area and use the larger angle in the following Sections. Round up to the nearest degree. Note: It is possible to find different angles between port and starboard side of the hull.
Figure 22 – Measuring Port Side, Outboard, Transom Angle
  1. Determine the number of wedges required for each Controller’s Wedge Pack using the transom angle measured in previous sections and Table 2 – Transom Angle and Wedge Plates.

The transom and Wedge angles indicated in the Table 2 are the maximum range of the product. If the boat’s transom angle is outside the range of Table 2, do not add or remove more wedges to accommodate the different angle. Contact Seakeeper to determine the best course of action.

Table 2 – Wedge Plates Based on Transom Angle

Wedge Plates
Measured Angle3 Degree4 Degree5 DegreeTop Bolt Length
112°150 mm
111°150 mm
110°150 mm
109°260 mm
108°1160 mm
107°1160 mm
106°1160 mm
105°260 mm
104°1260 mm
103°11160 mm
102°1260 mm
101°1260 mm
100°21160 mm
99°2260 mm
98°11260 mm
97°2260 mm