Carlisle Island Sailing
Guide
Carlisle Island Sailing Guide. Carlisle Island lies immediately east of Brampton Island and forms the central island of the northern Cumberland group. It shares the same steep eastern profile, broad western anchoring basin, and predictable depth gradients as Brampton, making the two islands function as a paired anchorage system. Carlisle is uninhabited, with no facilities, and all anchorages are used solely for overnight shelter and staging for vessels transiting between the Whitsundays and Mackay.
The underwater profile around Carlisle Island is consistent, with offshore depths of 20–34 m reducing evenly to 12–16 m near the shoreline. Inside the anchoring zones, depths settle into 6–10 m over firm sand. Fringing reef is confined to the headlands and rises from 3–5 m into the reef flat. The western side offers the only reliable shelter in SE–E winds, while the eastern and southern sides are exposed and only workable in calm conditions.
Carlisle Island Sailing Guide - Approaches
Carlisle Island sits east of Brampton Island and forms a sheltered anchoring basin between the two islands known as Brampton Roads. The island’s western side provides the most dependable anchoring options, with clean sand bottoms and predictable depth gradients. Offshore depths remain consistently 20–34 m, reducing to 12–16 m near the shoreline. Inside the anchoring areas, depths sit in 6–10 m over firm sand. The eastern and southern sides are exposed to Coral Sea swell and unsuitable except in light conditions.
Carlisle Island West
(Primary Anchorage)
The western side of Carlisle Island forms the eastern half of the Brampton Roads anchorage and is the most reliable anchorage on the island. Approaches are straightforward, with offshore depths of 20–30 m reducing to 12–14 m as you close the shoreline. Inside, anchoring depths sit in 6–10 m over firm sand, with the central basin offering the cleanest holding. The seabed slopes gently toward the island, and the anchorage remains free of coral except near the northern and southern headlands.
Carlisle West provides strong protection in SE–E winds, with minimal swell intrusion. It becomes exposed in N winds and develops a light roll in SW winds depending on swell direction. Tidal streams are moderate but predictable, with a gentle set through Brampton Roads during springs. Dinghy access is straightforward at all but the lowest tides, with 1–1.5 m at the shoreline.
Carlisle Island North‑West
Pocket Anchorage
A small pocket on the north‑western side provides a secondary anchorage in settled conditions. Offshore depths of 20–26 m reduce to 12–14 m near the shoreline. Inside, anchoring depths sit in 6–8 m over sand with isolated coral. The fringing reef rises from 3–5 m, and coral heads lifting into 2–3 m are scattered across the northern margin. This pocket is workable only in light SE–S winds and becomes exposed in W–N winds. Dinghy landing is possible at mid‑tide, though reef shelves restrict access at lower water.
Carlisle Island Eastern
Side (Fair‑Weather Only)
The eastern side of Carlisle Island is exposed to the Coral Sea and only suitable in calm conditions. Offshore depths of 24–34 m reduce to 14–18 m near the shoreline. The seabed drops steeply, and anchoring bands are narrow, typically 10–14 m over sand with scattered coral. Fringing reef rises from 3–5 m, and coral heads lifting into 2–3 m are common along the eastern margin. This side is untenable in SE–E winds and only workable in light W–SW winds. Swell intrusion is immediate when wind shifts east of south.
Carlisle Island Southern
Side (Transit Only)
The southern side of Carlisle Island is steep, exposed, and not suitable for anchoring. Offshore depths of 22–30 m drop quickly into deeper water, and the fringing reef rises abruptly from 3–5 m. This area is used only for transit between Carlisle and Keswick Islands. Swell wraps around the headlands in SE–E winds, and the shoreline offers no protection.
Carlisle Island Sailing
Guide - Navigation
Navigation around Carlisle Island is straightforward, with predictable depth transitions and clear reef definition.
- Depth transitions are even, from 20–34 m offshore to 12–16 m near the shoreline.
- Fringing reef is confined to headlands and rises from 3–5 m into the reef flat.
- Coral heads lifting into 2–3 m are common near the eastern and southern points.
- Tidal streams are moderate in Brampton Roads, with a gentle set during springs.
- Visibility is generally good, and reef edges are easy to identify in settled conditions.
- Low sun angles can obscure coral heads; late‑day arrivals require caution.
The safest entry lines are central approaches into Carlisle West and the north‑west pocket, avoiding the reef shelves on the eastern and southern sides.
Carlisle Island Sailing
Guide - Weather
Carlisle Island’s western anchorages are reliable in SE–E trade winds, with winds commonly 15–22 knots during the trade season. Carlisle West remains comfortable in these conditions, with minimal swell intrusion. N winds render all anchorages exposed and uncomfortable, and NE winds can introduce a light roll. S–SW winds remain workable but may produce a gentle swell depending on direction. Tidal range is moderate, and streams set predictably through Brampton Roads.
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Resource
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Carlisle Island Sailing
Guide - Summary
Carlisle Island provides dependable anchorage on its western side, with clean sand bottoms, predictable depth profiles, and strong protection in SE–E winds. Carlisle West is the primary anchorage and the most reliable, while the north‑west pocket is strictly fair‑weather. The eastern and southern sides are exposed and only suitable in calm weather. Carlisle Island functions as a practical overnight stop for yachts transiting between Brampton Island, Keswick Island, and the Mackay region. Carlisle Island Sailing Guide for all you need to know.