NTM 151/2025 - Thorn Rock Navigation Buoy Unreliable and Flashing Out of Sequence” is cancelled as the light has been repaired.

  1. MARINERS ARE HEREBY ADVISED that the Thorn Rock Buoy, Q(9)15s, in approximate position Lat 51°41.53’N, Long 005°07.76’W, has been repaired and is now fully operational, flashing in the correct sequence.
  2. This Notice to Mariners cancels NTM 151/2025 that previously reported the buoy as unreliable.
  3. Admiralty Charts 3273, 3274, and Imray Y26 & 2600 Atlas refer.
  4. This notice will self-cancel at 23:59 on 24th December 2025. 

BY ORDER
M RYAN
HARBOURMASTER

Port of Milford Haven
Gorsewood Drive
Hakin
Milford Haven
Pembrokeshire
SA73 3EP

Tel: 01646 696100
Email: enquiries@mhpa.co.uk