Table 1

- See PDF for table

Table 2

- See PDF for table

NR 5.12(6)(b) (b) Step 2. If FACTOR number is larger than 52.0, the safe outboard horsepower capacity is figured according to the type of steering and the height of the transom. Measure transom height in inches (measure from bottom of keel to lowest point of the transom). For outboards with remote steering and a transom height of at least 20 inches, multiply the FACTOR by 2, subtract 90 and raise the answer to nearest multiple of 5. The resulting number is the maximum safe horsepower in calm water.

NR 5.12 Note Note: Following are examples of how to raise answer to nearest multiple of 5:

NR 5.12 Note If the second numeral in your answer is a 5 or a 0, DO NOT CHANGE ANSWER.

NR 5.12 Note If the second numeral in your answer is 1, 2, 3, or 4, change it to 5. For example, 21, 22, 23, or 24 would all be changed to 25.

NR 5.12 Note If the second numeral in your answer is 6, 7, 8, or 9, change it to a 0 and raise the first numeral by 1. For example, 26, 27, 28, or 29 would all be changed to 30.

NR 5.12(6)(c) (c) Step 3. For outboards that do not have remote steering or the transom height is less than 20 inches, multiply FACTOR by 0.8, subtract 25 and raise the answer to nearest multiple of 5. The final answer is the maximum safe horsepower in calm water.

NR 5.12(6)(d) (d) Step 4. For flat-bottomed, hard chine (where the side meets the bottom) outboards that do not have remote steering or the transom height is less than 20 inches, multiply FACTOR by 0.5 and subtract 15, raise answer to the nearest multiple of 5, the final answer is the maximum safe horsepower in calm water.

NR 5.12 Note Note: The above formulas and tables used to determine maximum safe horsepower capacity for outboard motorboats appear in 33 CFR 183.53.

NR 5.12 History History: Cr. Register, March, 1966, No. 123, eff. 4-1-66; renum. from WCD 5.12 to be NR 5.12, Register, March, 1971, No. 183, eff. 4-1-71; cr. (6), Register, April, 1985, No. 352, eff. 5-1-85; am. (6) (intro.), Register, July, 1993, No. 451, eff. 8-1-93; am. (6) (b), Register, May, 1995, No. 473, eff. 6-1-95.

NR 5.125 NR 5.125 Noise level standards for motor boats.

NR 5.125(1) (1) Testing requirements.

NR 5.125(1)(a) (a) The operator of any boat, when requested by a law enforcement officer who reasonably suspects a violation of s. 30.62 (2), Stats., shall operate his or her boat in a manner prescribed by the officer, to determine compliance with s. 30.62 (2), Stats.

NR 5.125(1)(b) (b) An officer requesting a boat operator to submit to a noise test shall test the boat using testing methods J34, J1970 or J2005.

NR 5.125(1)(c) (c) When the J2005 testing method is used, the officer shall deduct 2 decibels from the decibel reading.

NR 5.125 Note Note: Copies of the Society of Automotive Engineers Recommended Practice Report J34, J1970 and J2005 entitled “Exterior Sound Level Measurement Procedure for Pleasure Motorboats” may be obtained from the Society of Automotive Engineers, Inc., 400 Commonwealth Drive, Warrendale, Pennsylvania 15096.

NR 5.125(2) (2) Proof of compliance for manufacturers.

NR 5.125(2)(a) (a) The manufacturer of any engine model manufactured after September 1, 1986 and offered for sale in this state will send a letter of compliance to the Wisconsin Department of Natural Resources, P.O. Box 7921, Madison, Wisconsin 53707 (Attention: Boating Safety Section).

NR 5.125(2)(b) (b) The letter shall contain the following information:

NR 5.125(2)(b)1. 1. The name, address, and phone number of the manufacturer.

NR 5.125(2)(b)2. 2. A statement that a representative sample of each model or model group, properly installed on a motorboat on which it is typically used, has been tested in accordance with Society of Automotive Engineers Recommended Practice SAE J34a, dated April, 1977, and meets the requirements of s. 30.62 (2), Stats.

NR 5.125(2)(b)3. 3. The description and model designation of each representative engine and the motorboat on which it was tested.

NR 5.125(2)(c) (c) The department may request additional information from the manufacturer to determine if the engine complies with SAE J34a, dated April, 1977, and s. 30.62 (2), Stats.

NR 5.125(3) (3) 

NR 5.125(3)(a) (a) Manufacturer’s standard. The noise level testing procedures of the Society of Automotive Engineers Recommended Practice Report J34a, dated April, 1977, shall be adhered to by manufacturers when submitting proof of compliance according to s. 30.62 (2) (d), Stats.

NR 5.125(3)(b) (b) Operation standard. Noise level testing procedures J34a, J1970 or J2005 of the Society of Automotive Engineers shall be adhered to by boat operators when requested to submit to one or more of them by officers conducting noise tests on boats operating in the state of Wisconsin.