Notice to Mariners No 59 of 2025 (Temporary)
Tuesday 2 September 2025

HARBORS AND NAVIGATION ACT 1993
Notice to Mariners No. 59 of 2025 (Temporary)
SOUTH AUSTRALIA – SPENCER GULF – PORT BONYTHON – STONY POINT – EXCLUSION ZONE ESTABLISHED
Mariners are advised that an Exclusion zone has been established in Port Bonython harbor.
This area commences at the shore and extends approximately 150m from the shore and is 350m wide.
Mariners, swimmers, bathers and all other aquatic users are prohibited from entering the exclusion zone.
This area is bounded by the following coordinates:
- 32°59'48.0" S 137°45'07.4” E
- 32°59'50.1” S 137°45'04.6” E
- 32°59'51,2” S 137°44'58.9" E
- 32°59'51.8” S 137°44'53.7” E
- 32°59'48.9” S 137°44'51.5" E
Mariners are advised to navigate with caution in this area.
Charts affected: AUS136, AUS485, AUS 778, AUS4060, AUS4709
ENC AU433137, AU434137, AU434138, AU5PBY01, AU5PPI01, AU5WYA01
GORDON PANTON
Manager Marine Safety and Compliance
Department for Infrastructure and Transport
02 September 2025
DIT 2017/02277/01