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The datum used for these positions is WGS 84. These positions should be moved 0.01 minutes Southward and 0.08 minutes Eastward for plotting on the older version of Admiralty Chart 1464 (OSGB 36).

The bar channel should not be used at any time other than 3 hours either side of High Water (Depending on sea state).

The wreck of the Grampian Castle lies in position 053° 07.30’N 004° 22.97’W.
Mariners are advised to exercise caution in this area.

   

Buoy Positions – 20/04/2023

Aid to NavigationLatitudeLongitude Lights
LLANDDWYN ISLAND
SW ROCK BUOY
S CARDINAL
53ᵒ 07’.79 N004ᵒ25’.05 WUnlit
LLANDDWYN ISLAND
NE ROCK BUOY
S CARDINAL
53ᵒ 08’.04 N004ᵒ24’.47 WUnlit
SAFE WATER MARKNot on StationNot on StationL Fl.10s
C 1 STARBOARD 53ᵒ 06’.966 N004ᵒ24’.714 WFl.G.5s
C 2 PORT53ᵒ 07’.124 N004ᵒ24’.430 WFl.R.10s
C 3 STARBOARD53ᵒ 07’.236 N004ᵒ 23’.884 WQ.G
C 4 PORT53ᵒ 07’.124 N004ᵒ23’.723 WQ.R
GRAMPIAN CASTLE53ᵒ 07’.26 N004ᵒ 22’.96 WFl(4) Y10s
C 5 STARBOARD53ᵒ 07’.194 N004ᵒ23’.376 WFl.G(2).5s
C 6 PORT53ᵒ 07’.155 N004ᵒ21’.962 WFl.R.5s
MUSSEL BANK53ᵒ 07’.277 N004ᵒ20’.810 WFl.R(2).5s
C 8 PORT53ᵒ 07’.619 N004ᵒ19’.447 WFl.R.3s
C 10 PORT53ᵒ 08’.02 N004ᵒ18’.50 WQ.R
C 7 STARBOARD53ᵒ 08’.18 N004ᵒ18’.13 WQ.G
C 12 PORT53ᵒ 08’.50 N004ᵒ17’.38 WFl(2)R.10s
C 9 STARBOARD53ᵒ 08’.55 N004ᵒ16’.92 WFl.G.2s
CHANGE BUOY
S CARDINAL
53ᵒ 08’.81 N004ᵒ16’.74 WVQ(6)+LFl 10s
SEIONT RIVER
BIFURCATION
53ᵒ 08’.51 N004ᵒ16’.75 WUnlit
TRAETH GWYLLT
STARBOARD
53ᵒ 09’.23 N004ᵒ16’.12 WFl(2)G.10s
C 13 STARBOARD53ᵒ 09’.54 N004ᵒ15’.90 WFl(4)G.10s
C 11 STARBOARD53ᵒ 09’.88 N004ᵒ15’.63 WFl(2)G.5s
C 14 PORT53ᵒ 10’.23 N004ᵒ15’.41 WFl.R.5s
C 9 STARBOARD
PORT DINORWIC
53ᵒ 10.65 N004ᵒ13’.95 WFL(3)G.10s