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Copyright © 2014-2015  The Emocean Group. All rights reserved



The Undersea Hunter is a 90 foot boat offering intimacy and charm.  She has 6 new cabins all situated on the lower deck which can accommodate up to 14 passengers. All individually air-conditioned with private bathrooms.  The dining room is fitted with comfortable seating and offers a mix of American and Costa Rican cuisine. There is also a comfortable lounge with a constantly refreshed refrigerator.  There are 14 personal camera lockers and a camera bench.  Individual gear storage is provided for each diver and protected areas for even the largest camera housings and lights. The ample diver deck offers 38 x 24 feet of space and even an extendible crane with 15 ton lifting capacity.   The sun deck gives you the space to read and relax and enjoy the sunsets. Each of our vessels has hard fiber skiffs which are custom built and have space to secure your tank and can fit 10 divers plus dive guide and driver.  Each skiff also has a metal ladder and rooftop. Although this vessel maybe more expensive, its popularity amongst repeat divers as well as professional photographers, professional film crews and conservation organisations ensures you receive a far superior diving experience.  We also offer a submersible experience (at an extra charge) to all our passengers.







Deck plan of Under Sea  Hunter Liveaboard showing sun deck, upper deck, lower deck and main deck



Length: 90 ft / 28 m

Beam: 24 ft / 7.4 m

Draft: 8 ft / 2.5 m

Displacement: 180 tons

Construction: Steel with teak work deck

Engines: Twin Caterpillar 240 hp ( Total 480 HP )

Cruising Speed: 9 knots

Maximum Speed: 9.5 knots

Range: 6,000 nautical miles

Endurance: 24 days

Tenders: One 25 ft. heavy duty fiberglass dive boats One 22 ft. heavy duty fiberglass dive boats One 17 ft. rigid bottom inflatable

Generators: Two 65 kW and one 5 kW portable

Available Voltage: 110/208 VAC 12-24 VDC

Fuel Tankage: 8,000 Gallons (normal operation)

Water Tankage: 6,000 Gallons (1,800 gallons/day water maker)


Full safety equipment as per Costa Rica and the International Maritime Bureau (IMB) requirements. Comprehensive emergency first aid kit, Emergency oxygen kit for 3 persons, 18 Mini Personal Diver Locator EPIRB

All divers are provided with a nautilus lifeline gps, and a safety kit including sausage, whistle and torch.


Scuba Compressors: Two 13 cfm electric

Scuba Tanks: 4 air and 24 nitrox aluminum 80 cu/ft. tanks 2,200 cu/ft. high-pressure storage bank

Technical Diving: Full oxygen, nitrox included and rebreather service (passengers must bring their own rebreathers)


3 GPS (Global Positioning Systems)

 2 Furuno Radars (64 and 36 Miles),

2 VHF radios

 3 handheld VHF radios

2 depth Sounders


SSB radiotelephone: SEA 222

 Radio Direction Finder: SIMRAD

Satellite phone

Multi-system television

 DVD player and CD stereo.


15-ton deck mounted crane, 38 ft. by 24 ft. (11m by 7.4 m)

work deck space

fully equipped workshop with arc-welding and oxy-acetylene equipment/supplies

16 personal dive gear boxes

15 personal camera lockers with Stabilized and surge protected

110v outlets

Air conditioning throughout the vessel

Sundeck and lounge chairs

Washer and dryer

Refrigerator and ice machine.

Large deck-mountable Pro-Lab consisting of a 10 ft. x 10 ft. self-contained specialized movie/video camera workstation

dedicated work tools, fully air-conditioned



Day 1 - Upon arrival in San Jose, Costa Rica, you will need to take a taxi to your hotel. There are plenty of taxies available, even big cars for those of you who carry a lot of gear. The same evening, the Undersea Hunter representative will fax you to confirm your pick up time, the next day. Evening at your leisure.


Day 2 - You will be picked up before noon at your hotel and transferred by bus to Puntarenas, a seaport village where the UNDERSEA HUNTER boards its passengers. That afternoon, you will begin the cruise to Cocos Island.


Day 3 - All day of travel. There will be ample time to arrange dive and camera gear. The cruise gives you an opportunity to get acquainted with the other divers.


Days 4 to 9 - Spent diving the pinnacles around the perimeter of Cocos Island. Divers usually Average three dives per day at depths of 60-100' or more. Water temperature of approximately 78-82F (27-30C). It will also be possible to do at least three night dives during the trip.


Day 10 - Make the last 3 dives before the cruise back to Costa Rica and reality!


Day 11 - All day to discuss the diving and to compare your adventures!


Day 12 - Arrival in Puntarenas. Immediately after breakfast you will be transported back to San Jose. Upon arrival in San Jose we recommend that you spend an additional hotel night prior to departing the country.


 Diving Schedule


 Our goal is to introduce you to varied and exciting dives. Generally, we have two dives scheduled for the morning, 8 AM and 11 AM and another dive after lunch, around 2.30 PM. During the trip it will also be possible to do at least three night dives. This schedule can vary depending on events, circumstances and opportunities that may present themselves. Our motto is never turn your back on a magnificent bait-ball, which can appear at almost anytime. Once a thorough briefing from our dive-masters has been given onboard the mothership, our guests jump onto their respective skiffs and zip out to the chosen sites. Each support boat accommodates up to nine divers plus driver and dive-master, who always dives with the group. After a short ride, each of the skiffs will reach a different dive site that is alternated on the following dive, allowing the two groups to dive the same areas but at different times of the day. On the way to or from the planned dive sites it is very common for our skiff drivers to seek out the best spots for memorable surface experiences. To watch dolphins, mantas, whales, a promising bait-ball or just cruse up to some of the islands most beautiful attractions, which are only reachable by small skiff. Between dives or when time permits, guests are welcome use the sea kayaks, go for a swim, snorkel around the boat, or just chill-out and watch movies. Schedules and Rates


  NATIONAL PARK FEE  GROUND Per person 11 day / 10 night USD 245


TRANSPORTATION  (from San Jose to the pier and return) USD 100


Boat full charter 10 days x 16 people USD 72,567



The individual price does include:

Accommodation on board

All meals

All non alcoholic drinks and beer

Divemaster service

Three dives per day with all nitrox fills, tanks and weights.

Seven full days of action packed diving.


From To Location Duration Rate
27.11.2015 07.12.2015 Cocos Islands 10 days $5445.00
--------- -------- Boat full charter x 16 people 10 days $72,567

Note: Please do not book any travel arrangements until you have received your booking confirmation from us.


From To Location Duration Rate
01.11.2016 11.05.2016 Cocos Islands 10 days $5645.00
28.05.2016 07.06.2015 Cocos Islands 10 days $5645.00
10.06.2016 20.06.2015 Cocos Islands 10 days $5645.00
22.06.2016 02.07.2016 Cocos Islands 10 days $5645.00
07.07.2016 17.07.2016 Cocos Islands 10 days $5645.00
21.07.2016 31.07.2016 Cocos Islands 10 days $5645.00
03.08.2016 13.08.2016 Cocos Islands 10 days $5645.00
16.08.2016 26.08.2016 Cocos Islands 10 days $5645.00
29.08.2016 08.09.2016 Cocos Islands 10 days $5645.00
11.09.2016 21.09.2016 Cocos Islands 10 days $ 5645.00
24.09.2016 04.10.2016 Cocos Islands 10 days $5645.00
07.10.2016 17.10.2016 Cocos Islands 10 days $5645.00
20.10.2016 30.10.2016 Cocos Islands 10 days $ 5645.00
02.11.2016 12.11.2016 Cocos Islands 10 days $5645.00
15.11.2016 25.11.2016 Cocos Islands 10 days $5645.00
29.11.2016 09.12.2016 Cocos Islands 10 days $5645.00
12.12.2016 22.12.2016 Cocos Islands 10 days $ 5645.00
25.12.2016 04.01.2017 Cocos Islands 10 days $5645.00
--------- -------- Boat full charter x 16 people 10 days $72,567

Note: Please do not book any travel arrangements until you have received your booking confirmationfrom us.




A distinctive and remote diving location, Cocos Island is for the serious diver! Cocos Island has retained its pristine appearance both above and below the ocean's surface. Cocos is a very lush, rugged tropical island that is preserved as one of Costa Rica's National Parks. It is a long voyage to the island, but one that serious divers are happy to make. The experiences one will have on this trip are sure to spice up any logbook. Once aboard the UNDERSEA HUNTER, the cruise to Cocos Island takes 30-34 hours and culminates with breathtaking views of numerous waterfalls. Diving here is just short of unbelievable. In the waters of Cocos Island, you will dive with white tips and hammerhead sharks, marbled stingrays approaching 6' in diameter, manta rays up to 12' across, giant moray eels and an occasional whale shark! Additionally, you will see Moorish idols, large schools of jacks and tuna, creole fish, lobsters, octopus and other various reef life. Silky sharks, silver tips, sailfish, marlin, and green turtles are also in the area. The key word in describing Cocos Island diving is ACTION! ! ! If you are looking for adventure, it's here! Conditions around Cocos are varied. The one constant factor at Cocos is change. Currents are at times strong and unusually changeable. Diving could become strenuous, but not more than any experienced diver could handle. Visibility averages 80-100' with occasional extremes of 40 and 120'. With this in mind, be prepared for some of the best diving of your life. Visibility averages 80-100’ with occasional extremes of 40