Leg 4 — Southern Cook Islands: Atiu Exploration
Beyond the Beaches. Discover Another Side of the Cook Islands.
Rarotonga → Atiu → Rarotonga | May 23–29, 2027
7 Days | Approximately 235 Nautical Miles | Maximum 6 Expedition Members
Single Berth: $5,900 per person | Shared Berth: $5,400 per person
Beyond the familiar beaches and turquoise lagoons of the Cook Islands lies a different kind of island adventure.
Atiu is a place of ancient limestone caves, lush tropical forests, dramatic coral cliffs, rare birds, and Polynesian traditions that remain deeply connected to daily island life.
Join Koru's small expedition crew as we sail from Rarotonga toward this remarkable, less-traveled island, combining genuine inter-island sailing with opportunities for exploration, cultural discovery, and unforgettable experiences in nature.
This is an expedition for those who love discovering places beyond the usual tourist trail.
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The Passage: Sailing Beyond Rarotonga
Our adventure begins in Rarotonga, where lush volcanic mountains rise above turquoise lagoons and coral reefs.
From here, we'll set sail northeast toward Atiu, approximately 115 nautical miles away. The passage offers an opportunity to experience open-ocean sailing between islands, participate in watch rotations, practice navigation, and develop practical seamanship.
Depending on conditions, we may sail through the night, experiencing the remarkable beauty of the South Pacific beneath a sky filled with stars.
The southeast trade winds can make our outbound and return passages quite different, providing opportunities to practice sail handling, weather interpretation, and passage planning.
Approaching Atiu reveals an unusual landscape—an ancient island ringed by uplifted coral limestone, with dense forests and secluded coves along its rugged coastline.
Unlike islands with protected lagoons and established yacht anchorages, Atiu requires particular care when planning an approach or landing. Our visit will depend on suitable sea conditions and safe access.
Our return passage to Rarotonga completes a memorable week of sailing and exploration.
What You'll Experience and Learn
Every Koru expedition is hands-on. You'll be an active participant aboard our 50-foot performance sailing catamaran, with opportunities to develop skills in:
Inter-island passagemaking and watchstanding
Sail handling, reefing, and trade-wind sailing
Weather interpretation and passage planning
Celestial navigation and electronic navigation
Coastal approaches, anchoring, and safe landing decisions
Vessel systems, seamanship, and offshore safety
You'll share in the daily responsibilities of life aboard, developing confidence and experience as part of a small sailing crew.
With a maximum of six expedition members, there's ample opportunity for individual instruction and meaningful participation.
Each expedition member receives one complimentary ASA course, subject to eligibility and availability.
[Download the Detailed Expedition Brief]
Atiu: Caves, Forests, and Island Traditions
Atiu offers a wonderfully different perspective on the Cook Islands.
Known as Enua Manu—the Island of Birds—Atiu is famous for its rare native birdlife, ancient limestone formations, and extraordinary natural environment.
If conditions permit a safe landing, we may arrange guided excursions into the island's forests and caves, including Anatakitaki Cave, home to the remarkable kopeka swiftlet—a tiny bird that navigates in darkness using clicking sounds.
Other possibilities include visiting local coffee growers, discovering secluded beaches, walking through tropical forests, or learning about Atiu's history and traditions from local residents.
The island's distinctive makatea limestone cliffs, quiet villages, and strong cultural identity create an experience very different from the better-known resort islands of the South Pacific.
Depending on weather and available time, snorkeling or diving opportunities may also be possible, although exposed reefs and limited local facilities make these activities highly conditional.
As always, the ocean determines our schedule. If landing conditions at Atiu are unsuitable, we'll adapt our plans to explore other opportunities in the Southern Cook Islands.
Expedition Details & Pricing
Departure: Rarotonga, Cook Islands (RAR) — May 23, 2027
Arrival: Rarotonga, Cook Islands (RAR) — May 29, 2027
Duration: 7 days
Distance: Approximately 235 nautical miles round-trip
Mandatory Safety Briefing: May 22 at 6:00 PM local time
Embarkation / Disembarkation: 10:00 AM local time
Single Berth — $5,900 per person
Your own berth, with no requirement to share with another expedition member.
Shared Berth — $5,400 per person
Two expedition members sharing one double berth save $500 each, a combined savings of $1,000 ($10,800 total).
Each expedition member receives one complimentary ASA course, subject to eligibility and availability.
A $1,000 refundable deposit per person secures your berth, subject to our reservation and cancellation terms.
Ready to Discover Another Side of the South Pacific?
Whether you're developing your sailing skills, fascinated by remote island cultures, or drawn to places where nature and traditional island life remain closely connected, we'd love to explore whether this expedition is right for you.
Koru expeditions are personal, participatory adventures built around learning, exploration, and meaningful connections.
