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Firing exercises will take place at Castlemartin Firing Range from 17th Nov - 5th Dec 2025, excluding weekends.

  1. MARINERS ARE HEREBY ADVISED that a military training firing exercise by the Ministry of Defence (MOD) will be conducted at the Castlemartin Firing Range, within the Sea Danger Area (SDA). 
  2. The exercise will take place from 17th Nov - 5th Dec 2025, between 0800 and 0300 GMT daily (excluding weekends).
  3. The Sea Danger Area is bounded by the following positions (WGS84 Datum). (The approximate area of operations is illustrated in the Chartlet attached). 

    Point

    Latitude (N)

    Longitude(W)

    Point

    Latitude (N)

    Longitude(W)

    A

    51°39.131’N

    005°03.548’W

    G

    51°33.878’N

    005°07.825’W

    B

    51°39.584’N

    005°04.730’W

    H

    51°32.064’N

    005°03.925’W

    C

    51°39.615’N

    005°08.580’W

    I

    51°31.392’N

    004°59.850’W

    D

    51°37.755’N

    005°10.618’W

    J

    51°33.065’N

    004°55.195’W

    E

    51°36.551’N

    005°10.391’W

    K

    51°33.722’N

    004°54.868’W

    F

    51°35.254’N

    005°09.561’W

    L

    51°35.785’N

    004°55.573’W

     

  4. All mariners are hereby advised to navigate with caution and keep well clear of the defined boundaries. Anchoring or drifting within the area is strictly prohibited during the operational period stated above.
  5. Admiralty Charts for reference 2878, 3273.
  6. For further details please contact Range Control (Call sign: Castlemartin Range Control) on VHF Ch16 or call 01646 662367.
  7. This Notice to Mariners will self-cancel at 23:59 on 5th Dec 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