Undersea Hunter: Historical Review & Cocos Booking Status

Step aboard Undersea Hunter

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The yachtCabinLoungeDiningOnboardDive deck

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Original boat review and archive photographs

The following descriptions reflect the earlier Divezone review. Historical specifications and service details may have changed.

Undersea Hunter Fleet are one of the premier dives safari operators visiting the amazing Cocos Islands. MV Undersea Hunter is the eponymous mother vessel fo the fleet and the sister vessel of MV Sea Hunter and MV Argo.

Sometimes known as the ‘Golden Triangle’, the Cocos Islands are 550km off the coast of central America’s Costa Rica. Largely unaffected by human interaction for millions of years, the Cocos are an impressive uprising of volcanic rocks and plateaus. Cocos were declared a marine park in 1978. And, today, remain home to some of the most impressive pelagic life on the planet. This is one of the last places on earth where you can still see large groups of sharks and rays in their natural environment. In the right season whales uitlise the Cocos Islands to shelter, congregate and give birth. Cocos also features in excess of 25 endemic fish species, including such special species as the red-lipped batfish. Cocos Islands are a diver’s dream.

MV Undersea Hunter is 90ft long making her the smallest of the fleet. The company’s ‘special projects’ vessel, she was originally built in 1968 and put into service for Perry Oceanography in the Caribbean. When acquired, Undersea Hunter spent 5 months being adapted from bow to stern to be an impressive liveaboard option with the modern conveniences expected by today’s diver. She has twin Caterpillar motors and is capable of cruising safely at 9 knots. And, with with hull stabilisers, she is perfectly evolved for the task in hand. She has the full gamut of safety equipment in accordance with International Maritime Bureau (IMB) requirements.

Cabins and Boat Layout

Undersea Hunter has 8 cabins to accommodate her 16 guests. She has an intimacy and charm not found on some of the larger vessels.

Each cabin is amenable to either a double or twin-single layout, depending on your circumstance. All have ensuite head (toilet) and shower facilities and individual air-conditioning. You’re sure to have a comfortable stay.

Cabin

The boat features a comfortable lounge area with soft chairs where you can chat, relax or even have a little nap on your surface interval! There’s TV/DVD, games and a refrigerator stocked with drinks to make your time here as hospitable as possible.

Lounge

The dining room serves up a nourishing combination of western and Costa Rican meals. On offer are fresh tropical fruits, salads, fish, chicken, beef, and much more, all prepared in a variety of ways by one of the chefs onboard who work wonders within the confines of the galley.

Dining

Up on the top deck is the bridge and a spacious sun-deck. Admire the vista or have a cold drink soaking up the night sky. The choice is yours.

Diving onboard Undersea Hunter

For the demanding Cocos Islands diver the facilities are superb. The dive deck is a spacious 38x24ft in area, offering ample space for equipment.

Dive Deck

Camera storage

The vessel has been used as a support vessel for the Film Industry and even has a 15 tonne crane on the dive deck!

There are individual stations for dive equipment and plenty of places to service photography equipment onboard. You’ll even find an allocated private camera locker.

Nitrox is available onboard and, should you be a CCR diver, support is available.

Sun deck

For a new trip, confirm current certification, insurance and equipment requirements with the operator; the original review is not current diving guidance.

Itineraries

The itineraries generally take the vessel to Cocos Islands. The islands are a considerable distance offshore and a 32-36 hour transfer once aboard is typical.

Before making a new reservation

• Obtain the exact vessel name, departure date and embarkation port.
• Confirm cabin layout, trip duration and the number of diving days.
• Request an itemised quote covering park charges, taxes and supplements.
• Check current experience requirements and cancellation conditions.

Status reviewed September 21, 2026. Undersea Hunter Group Unconfirmed departures are not evidence that the boat has ceased operating.