Bikini 2023September 19, 2023 – September 29, 2023
Come dive the historic wrecks of Bikini Atoll with the ECD Tech Diving Crew!

$9,195per diver*

$per non-diver*

space available


A one of a kind diving paradise, Bikini Atoll features beautiful reefs, corals and a plethora of marine life, and is the final resting place for some of the most significant warships in history. Bikini Atoll is a UNESCO World Heritage Site and is undisputedly ranked first on any serious wreck divers’ bucket list. Nowhere else on earth will you be able to dive such a unique collection of historic battleships, cruisers as well as the world famous USS Saratoga aircraft carrier.

As most wrecks in Bikini are beyond recreational diving limits, this trip is only for technical divers with previous wreck experience and certification to dive to 50meters/150 feet.

About the Diving

This is a technical diving destination and is only suitable for divers with certification for extended range/ decompression diving/ technical diving. All of the wrecks lie beyond normal recreational diving limits, so divers must be certified to dive to a minimum of 50 meters and have experience in wreck penetration.

In 1946, following the end of World War II, the United States gathered together a “mock” naval fleet in order to test the effects of atomic bomb blasts on a large naval fleet. They named it Operation Crossroads and designated Bikini Atoll to be one of the sites for the explosive tests, with the local inhabitants displaced to another atoll. While there were 67 nuclear weapons tests on the Marshall Islands between 1946 and 1954 including “Castle Bravo” which left a 2 kilometer wide 76 meters deep crater, the first series of tests in 1946 sank many of the wrecks we dive today. The diving in Bikini Atoll focuses on the wrecks that have been sunk there over the years though many of the premiere ships were sunk during the test in 1946. The maximum depth of the lagoon, and the wrecks we will be diving is between 180 - 200 feet for most of the wrecks. Some of them do come close to the surface (the Saratoga comes within 50 feet of the surface) but much of the attraction is deeper and it is required that all divers be trained to a minimum of 165 feet but 200 feet, and trimix training, is preferred. As in much of the pacific, expect the wrecks that we dive to be highly decorated with many fish. Sharks often find their way to the wrecks as well as some other larger marine life occasionally. We typically do 2 dives in a day with 4 or more hours in between for relaxation and decompression.

Below is a list of a few of the common wrecks we will dive when visiting Bikini Atoll along with a short description of each.

USS Saratoga (CV-3) - Lexington-class Aircraft Carrier
The Saratoga or “Sara” is 888ft long and 95ft wide, weighs 39,000 tons and rests at a depth of 170 feet. It is possible to carry out penetrations through the aircraft. The superstructure comes within 50 feet of the surface and can be entered around 60ft. The Flight deck is near 100 feet and the hangar is just below 100 ft. Here you will find Helldiver planes still situated at 105 ft with all dials and controls, bombed up and ready to go, although the deck is collapsing. Several aircraft lie on the seabed around the carrier and are accessible around 170 feet deep. This is regarded as the signature dive of Bikini Atoll.

Nagato - Japanese Battle Ship
This battleship was built for the Imperial Japanese Navy as the first super-dreadnought to mount 16-inch (406 mm) guns. With a cruising speed of 26.5 knots, this made her the Imperial Navy’s flagship as well as one of the most powerful and versatile warships in the world at that time. She measures 725ft in length and 95ft wide and her crew used to comprise of 1734 men. The Negato rests in 170ft of water and comes within 130 feet of the surface. The Wreck is almost perfectly upside down but you can still access the top deck, and guns, as the wreck lies on the superstructure and deck armament.

USS Arkansas
An American dreadnought, measuring 562ft long and armed with twelve 12-inch guns and capable of a top speed of 20.5 knots. The USS Arkansas served in both World War I and World War II; escorting convoys in the Atlantic and bombarding shore targets during the invasions of Normandy, Iwo Jima, and Okinawa. She was moored only 500 ft. away from the intended atomic bomb detonation in 1946 and was supposedly lifted up vertically within the blast column. She sank completely only 19 minutes after the blast, ending almost completely upside down on the sandy bottom at 180ft depth.

Other possible wrecks on the itinerary include: Prinz Eugen - German Heavy Cruiser - Depth (surface - 110ft), USS Pilotfish - US Submarine - Depth (170ft), USS Lamson - US Destroyer - Depth (160ft - 180ft), USS Anderson - US Destroyer - Depth (150ft - 170ft), USS Apogon - US Submarine - Depth (140ft - 160ft), USS Carlisle - US Attack Suport Boat - Depth (130ft - 165ft), Sakawa - Japanese Light Cruiser - Depth (150ft - 170ft)

The Truk Master caters to a maximum of 12 guests in 6 cabins for Bikini Atoll trips, each cabin with individually controlled AC units and en-suite bathrooms.  This boat is built for serious diving, with full equipment for rebreather and technical dives as well as a central camera station and dedicated rinse tank for pre and post underwater photography. Our 4 decks provide ample space for relaxation, dive equipment and camera preparation, whilst our experienced crew ensures you receive only the highest quality service on your diving vacation.

Astral Star’, a long range cruiser built by Codecasa and designed by Camper  Nicholson, has joined the Master Liveaboards brand and has undergone a full refit prior to her re-launch as ‘M/Y Truk Master’. The refit was overseen by our own experienced yacht building team.

Guests may choose between lower, middle and upper deck cabins, each of which are en-suite and have individual air conditioning units. Communal relaxation areas are split between the middle and upper decks comprising of a spacious indoor dining area, camera set up station and guest storage drawers, lounge bar with comfortable bench seating and plasma screen, shaded outdoor seating area and a sundeck.

Dive equipment is set up and stored on the rear of the middle deck. All guests are allocated an individual set up station, with under bench storage for masks, fins and other personal items. A central camera table can be used to store prepared equipment ahead of the dive, with dedicated rinse tanks provided. Divers can take advantage of the on deck shower hoses or use the starboard side deck head to rinse off between dives. The Captain welcomes you to join him at the fly-bridge, from where you can soak up the stunning views of the Marshall Islands .

Technical divers will find on board all the latest technical diving facilities and equipment to fully enable them to explore those ultimate wrecks in Bikini Atoll.

To dive in Bikini Atoll with Master Liveaboards, you will need the following equipment:
*Standard tech diving configuration for open circuit diving (backplate/wing for doubles, DIN regulators, stage bottle regulator) or rebreather
*Two methods of buoyancy. This can be achieved by using a wing with a redundant bladder, drysuit or lift bag with a minimum of     20kg/45lb of positive lift.
*Dive Computer – Multi-gas dive computer capable of switching between a minimum of 2 gasses ideally more.
*Backup Computer or depth/bottom timer.
*2 Surface Marker Buoys (SMB) – One red or orange SMB and one yellow SMB with a slate or wet notes attached for emergency use.
*2 Reels or spools – One with a minimum 15m of line and one with a minimum of 60m of line.
*Dive Slate or Wet Notes – Additional dive slate in addition to the slate used with the emergency surface marker buoy or a set of wet notes.
*Minimum of two dive torches (primary and back-up) for guests planning on doing any wreck penetration.


Charter package Includes:
➢ Round-trip Airport / Boat Transfers
➢ 10 Nights accommodation aboard Truk Master
➢ All meals, snacks, coffee, tea , water, juices and soft drinks
➢ 2 dives/ day

Charter package Excludes:
➢ Airfare
➢ Nitrox, additional gases and Sofnolime
➢ Equipment rental (including tanks)
➢ Alcoholic drinks
➢ Crew Gratuities (cash only)
➢ Departure taxes/marine park fees ($500 per person)
➢ Dive insurance (Required)

Classic Cabin (lower deck): $9195
Premium Cabin (upper decks): $9495
Hawaii Add On- 2 days in Honolulu pre-trip: $500

$1000 deposit per spot booked
$1000 payment due 12 months prior to trip start date
50% of the trip cost due 180 days before the trip start date
Full balance due 90 days before the trip start date

Any payment made towards any East Coast Divers travel event, whether a deposit or full payment, is non-refundable. Reservations not paid in full 60 days before the trip start date will be forfeited and the space will be opened up for booking by other travelers.  Travelers are strongly encouraged to purchase travel insurance.