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Oba Bay, Sideia Island

Anchorage · Milne Bay & Alotau · Louisiade Archipelago, Papua New Guinea
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The guide

Position
10°37.63'S 150°47.21'E
Bottom
sand with some coral
Holding
good
Notes
Little friendly village that invited SV Obiwan to lunch (Ali, Ken's cousin).
Cyclone season
Possible cyclone refuges nearby: Sideia's south coast has several deep-looking, nearly landlocked bays lined with mangroves (on the satellite view about 2-6 nm east, around 10 33.4S 150 50.8E, 10 33.3S 150 51.6E and 10 36.8S 150 44.2E). Depths unknown - nobody we know of has reported them. Check in good time before the season.

Our sketch map

Sketch map of Oba Bay, Sideia Island

Drawn by us from OpenStreetMap, Sentinel-2 and our GPS. Not for navigation.

More in the Milne Bay & Alotau

Driftwood Resort (Alotau)Alotau town anchorageWaga Waga (Discovery Bay)Kana Kopi BaySamarai IslandHemoe Bay (Basilaki Island)Black Rock - Wiyaloiki IslandSuau IslandTube Tube (Engineer Group)

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Sources: SV Obiwan via Ryan's waypoint (2023) · OnceUponAReef map study Oct 2026 (cyclone note)
Thanks to SV Obiwan: their notes are summarised in our own words.
This guide is a set of personal cruising notes shared in good faith. Information can be out of date or wrong, and positions can be out by hundreds of metres. It is not a substitute for official charts and notices, your own eyes, local knowledge, or professional medical, legal or customs advice. You use it at your own risk: the skipper alone is responsible for the safety of the vessel and everyone on board, and the authors accept no liability for any loss, injury or damage arising from its use.