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Length / Width

33 m / 8 m

Year built / renovated

1972  / 2014

Rental equip.

YES ($)


YES ($)


YES ($)


  • The Okeanos Aggressor I is a wonderful choice for those seeking marine life, with the schooling hammerheads of Cocos Island
  • Your day diving - all from pangas (dinghies) - is augmented with unforgettable experiences, including hiking through island jungles, swimming in spectacular rivers and superb dusk dives
  • Great choice for photography lovers, with an onboard photography professional available for free coaching. Good facilities are onboard, with large camera table and strobe charging station, plus a range of equipment available to rent
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Enhanced Health Measures

Date of last update:Feb 1, 2023

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• Increased frequency of cleaning and surface santization. • All guest rooms are serviced twice daily with all soft goods are removed and washed in hot water and detergent and all hard surfaces are cleaned and sterilized. • Bathrooms and other frequently touched surfaces will receive extra attention. • Hand santizer provided in all common areas • Aggressor Adventures will not require the use of masks. If a guest chooses to wear a mask, they are welcome to do so. • Social distancing measures will be observed where possible and guests are encouraged to take meals outside. Self-service buffets are gone. • Mask/gear rinse buckets will be replaced by freshwater hoses. • All guests will undergo temperature checks before entering. Those with temperatures of 100.4F / 38.0C will be denied check-in and referred to local medical professionals for follow up. • All staff and service personnel will undergo morning and evening temperature checks.
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Dates & Prices

Prices include taxes. Prices shown may be for non-divers.
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No need to enter any payment details now.
You only need to pay 48h after your booking is confirmed.

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BEST PRICE GUARANTEE - we match any competitor's price so you can book with confidence.
EXCLUSIVE BENEFITS such as FREE DAN dive insurance on most trips - why go elsewhere?
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Booking process


Once we receive your booking, we double check availability with the dive operator and reserve your spot


We usually get back to you within 24 hours to confirm that your booking is final


You then have 48 hours to take care of other travel arrangements. Your credit card will only be charged after that period

Payment & cancellation

Payment terms

  • Now: 0%
  • 48 hours after booking confirmation: 45%
  • 120 days before trip start: 100%

Cancellation fee

Free cancellation for 48h after confirmation

  • 25.0% of the total booking amount will be charged if you cancel more than 127 days prior to arrival
  • 45.0% will be charged if you cancel between 127 and 98 days prior to arrival
  • 100.0% will be charged if you cancel less than 98 days prior to arrival



The Okeanos Aggressor I is your ticket to large animals and even larger action surrounded by the lush, green uninhabited and exotic islands of Costa Rica

Make your escape to the hottest dive spots in the Pacific aboard the liveaboard Okeanos Aggressor I, to Cocos Island. 

Enjoy the best diving experience with Aggressor's unique liveaboard Staff. The Captain has been on the boat well longer than he can remember and is leading the crew to make sure you have an absolutely joyful experience. The liveaboard Okeanos Aggressor is famous amongst Divers for its comfortable rooms and great services.

Cocos Island, located 342 miles off Costa Rica’s coast, is one of the most sought after diving destination in the world. The towering pinnacles of Cocos lure big animals and the thrill they bring. Surround yourself in schools of Hammerheads, White-tipped Sharks, Mantas or even Whale Sharks as they all hail from the hometown of Cocos Island.


The liveaboard Okeanos Aggressor I was refurbished in 2014 with every detail designed to make your Dive Adventure unforgettable. When not exploring the hidden corners of the exotic islands, the goal of the Okeanos Aggressor I liveaboard is to provide outstanding service and onboard pleasures. 2 motorised dive tenders - Dive Deck with toilet, camera table and rinse tank - Main Deck with air-conditioned Saloon with TV, video player, music system, movie library, books, magazines and satellite telephone - Computer, internet, photo and video editing facilities - Dedicated Restaurant and Bar - Sundeck and shaded area with sun chairs. The ship has a central safe for storing any valuables.

Divers have a choice of 3 types of cabins on board, liveaboard Okeanos Aggressor I has 10 cabins, all with private en-suite bathrooms. There are 9 Deluxe cabins. 3 Deluxe cabins are located on the Upper Deck and 2 on the Lower Deck, these liveaboard cabins each have a Double bed and a Single Top Bunk bed (for twin share). 4 Deluxe cabins with Twin bunk beds are also located on the Lower Deck. A Quad cabin (with two Double beds, each with a Single Top Bunk bed) is located in the bow of the Lower Deck.

Costa Rica Pacific Islands marine beauty has been rated one of the top best places to scuba dive in the world. Scuba diving with the liveaboard Okeanos Aggressor offers up to four action packed dives each day along with spectacular dusk dives. No night dives are allowed. The liveaboard offers you jungle tours or private swim at a spectacular waterfall.

Food on board

The menu onboard is varied and plentiful, with a variety of American feasts, barbecues and local cuisine. If you have any special dietary requirements, please advise the US office as soon as possible so the yacht can adequately prepare to meet your needs. You will wake up to fresh fruit, hot entrees, cereals and juices. Lunches are buffet-style, featuring hot soups, homemade breads, salads and sandwiches and/or entrees.

Dinners are Chef prepared and served each evening as table side service and include salads, vegetables, seafood, beef or chicken with a fresh homemade dessert. Once onboard, please speak to the Chef about any special needs. Certain special dietary and beverage requests may not be available due to the remote nature of this location. 

As with all the Aggressor Fleet, soft drinks and alcohol are complimentary whilst onboard.


Please refer to logistics section of each itinerary to find detailed info on how to get there.

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Deck Plan


For your safety

  • Fire Alarm
  • Fire Extinguisher
  • Life Jackets
  • Life Rafts
  • Emergency Oxygen Kit
  • Automatic External Defibrillator (Aed)
  • First Aid Kits
  • Emergency Positioning Radio Beacon

Languages spoken

  • English
  • Spanish

Diving gear

  • Din/Int Adapters
  • Nitrox ($)
  • Rental Equipment ($)

PADI® Courses Available

  • Scuba Refresher
  • Advanced Open Water Diver
  • Nitrox Certification
  • Underwater Photography
  • Deep Diver Certification
  • Drift Diving
  • Boat Diver
  • Peak Performance Buoyancy
  • Other Specialties

Dive Center Facilities

  • Battery Charging Station
  • Warm-Water Showers
  • Fish Id And Diving Books

Boat Amenities


  • Land Excursions

Amenities & services

  • En-Suite Bathroom
  • Credit Cards Accepted
  • Wi-Fi ($)
  • Air-Conditioning
  • Spacious Diving Platform
  • Separate Zodiac/Dhoni

Great for families

  • Movies


  • Visa
  • Mastercard
  • Cash

Sports & Watersports

  • Snorkeling
  • Fishing

Food & drink

  • Buffet
  • A La Carte
  • Fine Cuisine
  • Alcohol
  • Vegetarian Food


  • Lounge/Tv Area
  • Us Power Sockets


Dates & prices

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