🧭 Charting / Primary References Official Source · Verified Jun 10, 2026 NGA Sailing Directions Pub.147 (Sector: Bermuda) and UKHO ADMIRALTY charts (e.g. Chart AC332, AC1073) cover Ireland Island / Great Sound approaches. 95% Confidence ✓ Confirm 💬 Comment
🧭 Entrance Character Official Source · Verified Jun 10, 2026 Great Sound entrance is obstructed by coral heads and a sunken ridge extending across from Ireland Island to Spanish Point. 95% Confidence ✓ Confirm 💬 Comment
🧭 Principal Dredged Channels & Least Depths Official Source · Verified Jun 10, 2026 Dundonald Channel is the principal dredged passage through the sunken ridge; least depth 11.3 m. Branches ESE to Two Rock Passage; Two Rock least depth 8.2 m (dredged). 95% Confidence ✓ Confirm 💬 Comment
🧭 Traffic / Navigation Regulations In The Fairways Official Source · Verified Jun 10, 2026 Inbound vessels must wait for outbound vessels in Dundonald Channel or Two Rock Passage; outbound vessels have right of way and should indicate by hoisting their national flag; do not enter these passages if you cannot do so safely; speed >10 kt only if necessary for safety. 92% Confidence ✓ Confirm 💬 Comment
🧭 Operational Updates / Notices Official Source · Verified Jun 10, 2026 Mariners must consult current NGA and UKHO (Admiralty) Notices to Mariners and local navigational warnings for updates to depths, buoyage, obstructions and restrictions. 92% Confidence ✓ Confirm 💬 Comment
🧭 Anchorage Restrictions / Cables Official Source · Verified Jun 10, 2026 Anchorage is prohibited over much of South Channel due to submarine cables; Grassy Bay offers anchorage (11–14.6 m) and parts of Great Sound offer anchorage 5.1–16.7 m; vessels with draft >7.9 m should anchor in Grassy Bay or Great Sound. 90% Confidence ✓ Confirm 💬 Comment
🧭 Local Hazards / Obstructions Near Basins Official Source · Verified Jun 10, 2026 A number of obstructions are charted in the vicinity of Heritage Wharf and King's Wharf; an obstruction is charted close NW of the SW end of the North Breakwater; a wreck is charted at the N end of North Basin near a small craft marina. 90% Confidence ✓ Confirm 💬 Comment
🧭 Cautions For Two Rock Passage / Local Hydrodynamics Official Source · Verified Jun 10, 2026 Caution recommended when transiting Two Rock Passage; backwash from the shore may induce a sheer; transit commonly guided by charted aids to navigation. 90% Confidence ✓ Confirm 💬 Comment