Monitor Manual

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3 Installing the Monitor

3.2.3 Length of Safety Tube

A standard 14" safety tube is delivered with most MONITORs, but boats with very low or very high freeboard at the stern may require a shorter or longer pendulum than standard. Shortening or lengthening the safety tube (67) varies the length of the MONITOR pendulum shaft. With a standard safety tube, the upper mounting tubes (89) should be located approximately 42" (1067 mm) from the waterline. Tubes sized –2", +2",+4", +6" and +8" are available from the factory to meet special design needs. No shorter tube than –2" should be used since no room would be left for the tube to buckle in an overload situation. The standard rule of leaving 6" of the paddle blade out of the water still applies, although the frame itself will now be mounted higher or lower depending on the variance in safety tube size. For boats over 45-foot LOA, we normally design the mounting system allowing the use of a longer safety tube. The increased leverage gives more power, which often is required on the larger boats.

Next >> 3.2.4 Importance of the Boat's Wake