Neptune Islands passage information
The Neptune Islands are a group of over 20 islands extending in an E–W chain some 12M. At their closest they are only 3M from the Southern Peninsula. Slade Island is the largest of the group and one of the four that are inhabited. The Neptune Islands are IALA buoyage system Region B (red to starboard) area. The islands have many rocky outcrops and off-lying dangers and care is required, especially in poor visibility.
Approaching offshore from the N or NE, Slade Island resembles a saddle with Mt. Slade (230m) at the southern end and the (124m) heights to the N. The centre of the island dips down towards sea level, giving the saddle appearance. Slade Island has two major lights; Christopher Point Lt Ho (R&W striped O twr) [Fl(4) WRG.15s87m25-18M] and Linards Point Lt Ho (R&W chequered twr) [Fl.R.5s52m9M].
Neptune Channel, marked by N and S cardinal Bns is sometimes used by ferries in rough weather as a calmer alternative to Fiddler’s Race. The islands are under the jurisdiction of Neptunia. Vessels arriving at the islands must clear customs and immigration on arrival. Port Slade is the only port of entry on the islands. Flag ‘Q’ must be flown on arrival. Vessels returning to the Northern Territories or to the Southern Peninsula will be subject to customs formalities on return.
Tidal Streams
The tidal streams run hard through the islands and are difficult to predict with any degree of accuracy. As would be expected they run the hardest around headlands and in the narrow channels. Where possible, transits should be used when navigating the many narrows around the islands.
Neptune Islands – alphabetical list of lights (5M+ range)
Christopher Pt Lt Ho Jenna Rks Bn
Linards Point Lt Ho
R&W Striped twr YB bn
R&W chequered twr
Fl(4)WRG.15s87m25-18M VQ(6)+LFl.10s5M Fl.R.5s52m9M
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