Dunk Island Sailing Guide

Dunk Island Sailing Guide. Dunk Island sits within the Family Islands group off Mission Beach and is a routine stop for vessels transiting between Hinchinbrook Channel and Cairns. The island provides a practical anchorage in settled conditions with straightforward approaches from all quadrants, though tidal set and wind acceleration off the island’s slopes require attention.

The island’s eastern and northern sides are exposed to the Coral Sea, while the western bay provides the only viable anchorage. Depths, holding, and sea‑state behaviour are predictable, making Dunk Island a functional stop for rest, weather waiting, or staging.

Dunk Island Sailing Guide - Approaches

Approaches from the north, east, and south are clear with charted depths generally >20 m until within 0.5 NM of the island. The western side is the only practical approach for anchoring. Seas from the southeast wrap around the northern point and can create short periods in fresh trade conditions.

• Northern approach: Clear water with depths 18–25 m. Minor tidal set to the southwest on ebb.
• Southern approach: Clear with depths 20–30 m. Occasional overfalls south of Kumboola Island in strong wind‑against‑tide.
• Eastern approach: Exposed to Coral Sea swell. Depths >25 m. Not recommended for anchoring.

Hazards include fringing reef along the eastern and northeastern shoreline, drying to 0 m at LAT. The sand spit on the western side extends further than charted after seasonal movement; maintain >200 m off until in <10 m water. Tidal range is typically 2–3 m, with currents setting north–south at 0.5–1 kt in the channel between Dunk and Mound Island.

Dunk Island Sailing Guide - Anchorage

The primary anchorage is on the western side off Brammo Bay. Depths are 6–12 m over sand with patches of broken coral. Holding is generally reliable in sand but less so over mixed substrate. Best holding lies north of the jetty alignment in 7–9 m.

The anchorage is exposed to northerly winds and becomes uncomfortable above 15 kt from that quadrant. In trade winds, expect bullets off the island’s slopes with gusts 5–10 kt above forecast. Swell wrap from the southeast is moderate but manageable in <20 kt conditions.

Dunk Island Sailing Guide - Entry Formalities

Dunk Island is within Australian territorial waters and requires no local clearance. Vessels arriving from overseas must complete Australian Border Force, Immigration, and Biosecurity entry at a designated port (Cairns or Townsville). No facilities exist on Dunk Island for clearance.  Starlink and other satellite communications equipment are permitted with no local restrictions. Firearms must be declared on entry into Australia and cannot be landed on Dunk Island.

Dunk Island Sailing Guide - Marina Facilities

There are no operational marinas on Dunk Island. The former resort jetty is not suitable for berthing and is restricted to service craft. Visiting yachts must anchor off Brammo Bay. Nearest marina facilities: Port Hinchinbrook Marina (Cardwell): depths 2–3 m at MLWS, limited services. Mission Beach (Clump Point): public jetty only, no marina berths. Cairns Marlin Marina: full‑service marina with deepwater access >5 m.

Dunk Island Sailing Guide - Local Weather

The area is dominated by southeast trade winds from May to September, typically 15–25 kt. These create consistent lee‑shore acceleration on the western anchorage. Summer months bring lighter winds, afternoon sea breezes, and higher thunderstorm frequency. Cyclone season runs November to April, with rapid deterioration possible.

Dunk Island Sailing Guide - Provisioning

Supermarkets. No supermarkets exist on Dunk Island. Nearest provisioning is on the mainland at Mission Beach: Woolworths Mission Beach, FoodWorks Mission Beach. Specialty produce Local tropical fruit suppliers in Mission Beach and El Arish. Cassowary Coast small‑farm produce stands along the highway.

Markets. Mission Beach Markets (Ulysses Park): monthly general produce and local goods. Innisfail Central Market: broader produce range, ~50 km inland.

Fish Markets. Innisfail Seafood: primary regional fish outlet. Cardwell Fishermen’s Co‑op: small‑scale local catch.

Dunk Island Sailing Guide - Local Fishing

Fishing around Dunk Island is shaped by the broader reef platform on the western side and the deeper contours running north and south of the island. The sand and rubble line in 12–20 m off Brammo Bay holds sweetlip, small nannygai, and cod, with better results on the slack when the usual 0.5–1 kt north–south set eases. The northern point produces coral trout and trevally along the reef edge in 8–15 m, particularly on the first push of the flood. The deeper channel between Dunk and Mound Island (18–30 m) sees mackerel and small pelagics during trade‑wind periods, with passes improving when wind and tide align.

Dunk Island Sailing Guide - Local Cuisine

Regional dishes include Mud crab (local catch): steamed or chilli‑style. Coral trout: grilled or pan‑fried. Barramundi: widely available across the Cassowary Coast. Tropical fruit varieties: mango, papaya, rambutan, lychee.

Dunk Island Sailing Guide - Fuel Supplies

No fuel is available on Dunk Island. Nearest marine fuel is at Clump Point (Mission Beach): diesel via bowser on the public jetty. Cardwell: diesel at the marina fuel berth. Jerry‑can transport required from Mission Beach for yachts.

Dunk Island Sailing Guide - Water Supplies

No potable water is available on Dunk Island. Water can be taken at Clump Point Jetty: limited potable supply. Cardwell Marina: potable water at berths.

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Dunk Island Sailing Guide - Marine Services

No marine services exist on Dunk Island. Nearest options Mission Beach: limited mobile mechanics and electricians. Cardwell: basic marine mechanical services. Cairns: full‑service marine precinct including Volvo Penta, Yanmar, Cummins, and multiple electronics technicians.

Dunk Island Sailing Guide - Local Customs

Dunk Island is part of the Djiru traditional lands. Respect applies to walking tracks, cultural sites, and wildlife. Avoid landing in restricted areas and minimise disturbance to nesting birds on the western sand spit.

Dunk Island Sailing Guide - Summary

Dunk Island is a functional anchorage for vessels transiting the Family Islands region, with predictable depths and straightforward approaches. No services exist on the island, so all provisioning and technical needs must be handled on the mainland. Best used as a short‑stay anchorage in settled trade‑wind conditions. The Dunk Island Sailing Guide for all you need to know.