Noise
Boat Noise Restrictions
The following Noise Regulations apply for all JBNZ boats at all times – Recreational or Competition.
1. All recreational are to be silenced to 80dBa or below.
2. All race and sprint boats are to be silenced to 95dBa or below on race days only.
3. On competition days a tolerance of 3 dBa will be allowed.Penalties:98.1 – 99.9 = 15%.100 dBa and above = total disqualification.
4. No competitor can protest another competitor on noise.
5. Competitors cannot protest results of noise reading unless they can prove obvious noise (exhaust) failure while competing in the event.
METER SETTINGS:RANGE – “90”
WEIGHTING – “A”
TESTING (AT EVENT)
1. Use two noise meters where available. Set one meter on the 90 scale and the other on the 100 scale.
2. The site should be open with no large obstructions or trees, breakwaters, buildings within 30 metres which could reflect sound. The meter position is to be 25 meters away from the boat 1.2 metres above the water level and tripod mounted directly in front of the operator. The boat must travel in a straight line at right angles past the meter.
3. The highest reading viewed is to be recorded
METER SETTING RANGE – “100”
WEIGHTING – “A”
RESPONSE – FAST
4. Results of test to be forwarded to the Secretary of local Branch who is to forward a copy onto the National Noise officer.
The onus is with the competitor to be re-tested where alterations are made to the boat.