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Uncharted Rocks off Port Underwood

Warning 7:38PM Friday 24 October, 2025

Harbour Notice 22-2025

Uncharted rocks have been located during survey work in the vicinity of position 41 21.820’ S 174 05.519’ E.

Depths are at 6m below chart datum, and potentially shallower.

Further updates will follow as survey work progresses.

Map showing the area

Update 31 October 2025:

It’s been reported additional rocks have been found 450m north of the new shoal area (as marked above). The shallowest points are at the following locations:

  • Position: 41° 21.58’ S 174° 5.45’ E / Depth: 2.30m
  • Position: 41° 21.60’ S 174° 5.47’ E / Depth: 1.22m

All mariners are advised to navigate with caution.