IMO has released corrigendum on 17th April 2025 for the Diving Code 2023.
There are corrections in two paragraphs, para 4.13.3.9.1 and para 4.13.3.9.1 s. The correction in both paragraphs appears typo corrections. The corrections are as below.
1 In paragraph 4.13.3.9.1 starting with “Transponder:”:
.1 the value “38.5 + 0.05 kHz” for the entry channel A is replaced by “38.5 ± 0.05 kHz”;
.2 the value “39.5 + 0.05 kHz” for the entry channel B is replaced by “39.5 ± 0.05 kHz”;
.3 the value “125.7 + 0.2 ms” for the entry Turnaround delay is replaced by “125.7 ± 0.2 ms”;
.4 the value “37.5 + 0.05 kHz” for the entry Reply frequency is replaced by “37.5 ± 0.05 kHz”; and
.5 the value ”-6 dB at +135°” for the entry Minimum transducer polar diagram is replaced by “-6 dB
at ±135°.
2 In paragraph 4.13.3.9.2 starting with Portable (diver-held or ROV mounted) interrogator/receiver:, the
value “+158” for the entry Directivity is replaced by “±15°”