Undersea Hunter liveaboards: Argo and Sea Hunter

Argo Liveaboard in the Cocos Islands

Undersea Hunter Fleet Review

Comprising Argo and Sea Hunter, this pair of liveaboards offers diving with schools of hammerheads and other sharks in the Cocos islands in Costa Rica, and snorkelling with humpback whales at Silver Banks in the Dominican Republic. They specialise in adventure diving. The Undersea Hunter group is committed to the environment with many initiatives towards sustainability, and not just on-board ship.

Zero Speed Stabilizers dramatically reduce roll motion while anchored at Cocos Island. The inverted pyramid-shaped stabilizers are suspended on either side of the boat on outriggers and then dropped 15ft/4.5m under the water. Utilizing hydraulic power by way of a one-way valve system, the stabilizers have created a comfortable experience while living aboard the vessels. They were originally designed and implemented to support a National Geographic expedition taking place in the open ocean.

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Sea Hunter Liveaboard

Sea Hunter Liveaboard in the Cocos Islands

Sea Hunter is an extremely stable boat, to be comfortable even in rough weather. She was specifically designed and built for long-range expeditions to destinations like Cocos and Malpalo islands. Offers ten and eleven day trips. In February and March she makes trips to Silver Banks in the Dominican Republic for snorkelling with large gatherings of humpback whales.

Sea Hunter Liveaboard Library and computers
The study, with library and computers for photo editing.

Cabins and Facilities

With 10 guest cabins with private bathrooms, Sea Hunter accomodates up to 20 passengers. The spacious boat provides private camera/strobe storage shelves with 110 and 220-volt AC power, zero-speed stabilizers and even a private washer and dryer for divers' towels and swim suits. A number of charging points are available for cameras and individual gear lockers.


Argo Liveaboard

Argo Liveaboard

The newest boat - a blend of work ship and luxury yacht. A 130-foot vessel (40 meters) she even has a deep-diving submersible in which you can travel down to 450 m. Fourteen crew look after the ship on trips to the Cocos Islands.

Utilizing hydraulic power by way of a one-way valve system, the stabilizers have created an even more comfortable experience while living aboard the vessels. They were originally designed and implemented to support a National Geographic expedition taking place in the open ocean.

Cabins and Facilities

Argo has 9 spacious staterooms and can take 18 passengers. Each cabin has air conditioning and a shower.

Argo  cabin

Nitrox and rebreather facilities are on-board. Three, powerful, 24-foot skiffs serve as tender-boats, with 115 HP twin-outboard motors.


Which Liveaboard to Choose?

Sea HunterArgo
Visits Cocos Islands or Silver Banks for whalesCocos Islands
20 divers in 10 cabins18 divers in 9 cabins
36 m long39 m long
Deep-diving submersible
Free NitroxFree Nitrox
Rebreather serviceRebreather service

When to Go to the Cocos Islands?

Diving is possible all year round. The best visibility is during the dry season from December to April Read More on diving the Cocos Islands.