7.2.1 The individual hearing protectors shall
be so selected as to eliminate the risk to hearing or to reduce the
risk to an acceptable level as specified in paragraph 7.2.2. The ship
operator shall make every effort to ensure the wearing of hearing
protectors and shall be responsible for checking the effectiveness
of measures taken in compliance of this Code.
7.2.2 Hearing protectors shall be of a type such
that they can reduce sound pressure levels to 85 dB(A) or less (see section 5.1). Selection of suitable hearing protectors
should be in accordance with the HML-method described in ISO 4869-2:1994
(see explanation and example in appendix 2).
Noise-cancelling technology may be used if the headset(s) have equivalent
performance to hearing protectors in their unpowered condition.
7.2.2.1 Noise-cancelling headsets specifications
should be as per confirmed manufacturer specifications.