Division 1.1 Recreational craft with inboard or stern drive engines without integral exhaust, personal watercraft and outboard engines and stern drive engines with integral exhaust shall be designed, constructed and assembled so that noise emissions shall not exceed the limit values in the following table:

United Kingdom

Rated Engine Power(single engine)In kW	Maximum Sound Pressure Level = L_pASmaxIn dB
$P_{N} \leq 10$	67
$10 < P_{N} \leq 40$	72
$P_{N} > 40$	75

where P_N = rated engine power in kW of a single engine at rated speed and L_pASmax = maximum sound pressure level in dB.

For twin-engine and multiple-engine units of all engine types an allowance of 3 dB may be applied.