Truk is best known for its world-class WWII wreck diving, from supply vessels to planes and a submarine, tightly packed into a coral reef lagoon. Bikini Atoll is part of the Republic of the Marshall Islands, which covers nearly 1 million square miles of idyllic emerald-green coral atolls, surrounded by the crystal-blue waters of the Pacific.

World War II Warships of Truk Lagoon


3rd January 2024 for 10 Nights plus Travel

Experience the Worlds Best Wreck Diving Destination

Truk Lagoon is an atoll in the central Pacific. About 1,100 miles northeast of New Guinea, and is part of Chuuk State within the Federated States of Micronesia (FSM). A protective reef, 140 mi around, encloses a natural harbour 749 by 31 miles, with an area of 820 square miles.

“Truck atoll” was the Empire of Japan’s main naval base in the South Pacific theatre during World War II. It was the site of a major U.S. attack during Operation Hailstone in February 1944, and Operation Inmate, a small assault conducted by British and Canadian forces during June, 1945. Many of these sunken ships can now be explored by scuba divers.

Built of steel, M/Y Truk Master is the newest liveaboard yacht to ply the waters of Truk Lagoon, welcoming aboard 16 guests for 7 nights. The 4 decks provide ample space for relaxation, dive equipment, and camera preparation, whilst the experienced crew ensures you receive only the highest quality service on your diving vacation.


There are 15 spaces on the boat with 3 different cabin types:

Classic Twin – £3418.80pp

Premium Twin / double – £3543.10pp

Superior (only 1 double cabin) – £3,766.40pp

On top of this will be flights (allow c. £1,000) and potentially 1 or 2 nights hotel depending on the flight times.

Non-refundable deposit is £1000.

Deposit 2 – £1000 March 2022

Deposit 3 – £1500 January 2023

Balance – Balance September 2023


Truk is best known for its world-class wreck diving and with over 60 wrecks, from supply vessels (Maru) to planes and a submarine, tightly packed into a coral reef lagoon. It is easy to appreciate why divers travel to this area time and time again. During WWII, the Japanese fleet used Truk as one of their main staging points for attacks on the allied forces but in 1944 the American led “Operation Hailstone” surprised the fleet resulting in the plethora of dive sites which we can see there today.

Many historical artifacts such as medicine bottles and newspapers along with articles of war, which include aircraft wings for the Zero Fighter planes, tanks, guns, gas masks and ammunition, can still be found at many of the sites., whilst the wrecks themselves are encrusted with corals, you can still clearly see telegraphs, steering columns and mounted guns. There is also the opportunity to explore engine rooms and holds. Surrounded by a coral reef, there are many excellent coral pinnacles and deep channels with schooling pelagics too!

‘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.

On Bikini Atoll itineraries, occupancy on M/Y Truk Master is limited to a maximum of 12 passengers due to space limitations for equipment storage. Spaces will only be available in premium cabins located on the lower and mid decks. Cabins 1 and 8 are not available for use by guests’ use on Bikini Atoll trips.

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 islands of Truk Lagoon.

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

Requirements: PADI Advanced Open Water or equivalent, 50 logged dives – Recommended additional 40 meter deep diver certified for recreational divers, or “PADI Tec 50” or equivalent for technical divers

Truk Lagoon

On a typical day the boat offers up to 4 day dives, however, the 4th-day dive may be substituted for a night dive when the boat is anchored within the lagoon. A 7-night itinerary provides for between 18-20 dives, whilst during the 10 night itineraries, up to 30 dives will be possible. The diving day is scheduled as follows:

  • Light Breakfast followed by a briefing and Dive 1
  • Full Breakfast, relaxation period, briefing and Dive 2
  • Lunch, relaxation period, briefing and Dive 3
  • Snack relaxation period, briefing and Dive 4, where possible
  • Dinner

Many of the wrecks lie within recreational diving depths, however, M/Y Truk Master also offers Tec diving facilities for those wishing to delve deeper into the wrecks and take a closer look at history.

Dive the superb wrecks of the Japanese Imperial Navy WWII fleet that are scattered around Truk Lagoon in a variety of depths. Our 7-night or 10-night itineraries allow you to explore not only many of the famous wrecks but to experience some superb reef diving also. There are numerous channels that cut through the reef which serve as hunting grounds for reef sharks and schooling pelagics which all add to the wonder of diving Truk.

Departing from Weno, our 7-night and 10-night liveaboard dive trips on Truk Master take you directly to the main concentration of wrecks located within the bay. Truk Master will moor over the deeper wrecks allowing an easy descent down the line directly on to the wreck. Technical divers will benefit from the support of the “mother ship”, whilst our 2 skiffs are able to shuttle less experienced divers to the shallower sites and offer reef diving as an alternative to the wrecks.

Fujikawa Maru – The armed cargo ship rests upright on the sandy bottom at 34m (110ft), rising up to 5m (15ft). She is one of the largest vessels at over 130m (430ft) in length giving plenty to explore. Decks are encrusted with corals as are her guns on the aft deck, whilst 6 holds contain a plethora of artifacts from the war, including Mitsubishi aircraft wings and Zero fighter propeller blades.

Fumitsuki – The Japanese destroyer sits upright in 38m (130ft) of water and is covered with corals attracted a wide variety of marine life. Her upper deck is at 21m (80ft) allowing recreational divers of advanced level plenty of opportunity to explore the wreckage.

Shinkoku Maru – A large oil tanker, now rests upright on the bottom encrusted with corals, sponges & hydroids. From the bridge you can see into the engine room whilst the galley still holds many utensils on the large stove. Small guns, mounted fore and aft are also covered with corals making this one of the most colourful and spectacular wrecks to be found in Truk.

Nippo Maru – With a depth range of 24m – 42m (78ft-137ft) the Nippo is an intriguing dive site for recreational divers and tec divers alike. With a tank and howitzer guns on deck, and 5-inch guns in the holds, the Nippo is not to be missed.

Heian Maru – The largest ship in the lagoon, the Heian, originally used as a cargo ship, is 165m (510ft) in length and lies on her port side in 34m (150ft) of water. Within her holds diver may find torpedoes, shells and even the occasional periscope.

San Francisco Maru – The passenger & cargo ship, weighing 5,831 tons, lays upright at a depth of 63m (195ft). Here divers can see the remains of many well preserved war-relics including three large tanks which rest on the deck at between 46-55m (150-175ft).

Gosei Maru – A submarine tender carrying torpedoes starts in just 3m (10ft) and drops to 33m (120ft) within which can be found many personal artifacts, serving as a reminder of those who lost their lives during the battle.

Rio de Janeiro Maru – lies on her port side at a depth of 34m (110ft) with holds containing numerous artifacts from bottles to guns. Once a luxury passenger vessel she was converted to a cargo carrier fo
r wartime and now provides divers with an easy exploration both inside and out.

Cost includes

  • Return transfers from local airport to the vessel on days of embarkation and disembarkation
  • Full board accommodation (based on double occupancy)
  • Tea
  • Coffee
  • Juices & soft drinks
  • Up to 4 dives daily at Truk
  • Single 11.1 litre (80cf) aluminium tanks (commonly called 12ltr)
  • DSMB
  • Weight belts and weights

Cost excludes

  • Marine Park & Port Fees: Truk Lagoon 7 nights - 195 USD
  • Flights
  • Satellite Internet
  • Rental equipment (including torch/computer/nitrox)
  • Alcoholic drinks
  • On board merchandise
  • Crew and dive guide gratuities
  • Marine Park & Port Fees
  • 13.2 litre (100cf) aluminium tanks (commonly called 15ltr) are available on request (charges apply)
  • Departure Tax - 30 USD
Getting to Bikini Atoll and general information

Getting there and away… Our itinerary is built around the United Airlines flight from Honolulu, Hawaii that serves both Kwajalein and Majuro. Depending on your itinerary, we highly recommend you use this flight to get to and from Kwajalein and/or Majuro. Passengers travelling from the Marshall Islands are required to pay an airport departure tax, for Kwajalein this is currently 20US$. This varies from airport to airport and must be paid in US$.
On arrival… No visa is required for entering the Marshall Islands for US citizens, EU countries, Canada and most other Western countries. Nevertheless, we recommend our guests to check for any updates and changes with their nearest Marshall Islands embassy or consulate. Please make sure that your passport is valid for at least 6 months beyond the period you intend to stay in the Marshall Islands. If you are traveling with medication, please ensure to bring your physician’s prescription with you. Please ensure you have a printed copy of the Master Liveaboards Sponsor Letter on hand when arriving in Kwajalein. Important information on arrival procedures in Kwajalein can be found here.

Staying there… The local currency in the Marshall Islands is the US Dollar (US$). Major businesses will accept credit cards; traveller’s cheques are accepted by banks and larger businesses. The number of ATMs on the islands is very limited, so we recommend bringing a sufficient amount of USD in cash, preferably in smaller denominations.

Climate and weather… The climate of the Marshall Islands is a tropical climate, with temperatures averaging between 27 and 29C (80-84F) all year round, with some trade winds and a light cooling down in the evening. Generally, the northern islands tend not to receive as much rainfall as the southern islands.

Time zone… The local time in the Marshall Islands is 12 hours ahead of UTC (GMT).

Health… In the Marshall Islands, medical care is very basic with the ‘best’ medical facility in Majuro. Any form of treatment other than basic requires evacuation. Normal precautions should be taken with food and it is advisable to drink bottled water only. No vaccinations are required before entering the Marshall Islands, however; we recommend consulting your doctor for updated information well before departure.
Radioactive radiation to which divers are exposed from the shipwrecks is negligible since water acts as an excellent insulator. Divers are safe, as long as they do not try to grab souvenirs from the wrecks. Pilfering is forbidden and hazardous.

Travel Advisories… We recommend that you book your international flight to and from Kwajalein Airport, which is served by United Airlines 3 times per week from Hawaii and takes around 7 hours. (The HNL – MAJ – KWA flight leaves on Monday, Wednesday, Friday, so generally, you will have to leave the day before that (Sunday, Tuesday, Thursday) from Los Angeles (LAX) or San Francisco (SFO) to make the connection.) Ideally, you arrive in Honolulu one day in advance of your flight to Kwajalein as this flight departs early in the morning. Keep in mind you will be crossing the date line traveling to Kwajalein Atoll. There is also a flight from Guam arriving at Kwajalein, however; we have scheduled our itinerary around the Honolulu flight.

Getting to Truk and general information

Getting there and away… M/V Truk Master embarks and disembarks at Chuuk International Airport. Book your international flight in and out of Chuuk International Airport (TKK) on Weno Island. Disembarkation at the end of the cruise will be just before 10 am. Most flights to Chuuk International Airport (TKK) require transit via Hawaii or Guam. Passengers travelling within the Federated States of Micronesia (FSM) are required to pay an airport departure tax for Chuuk, which is currently 30 US$.
Travel Advisories… Most flights to Chuuk International Airport (TKK) require transit via Guam or Hawaii, which are part of the United States. All non-US citizens must obtain a US visa or Electronic System of Travel Authorization (ESTA) prior to travel. Citizens of 37 countries, including most European nations, Australia, New Zealand, and Japan are eligible for the ESTA and should apply online at least 72 hours prior to travel. An ESTA is valid for 2 years and allows for multiple entries into US territories within that period. Guests without a visa or ESTA may be denied boarding.

On arrival… Passport holders of most western countries may obtain a visa on arrival which allows stays up to 30 days, meanwhile, travelers from the United States may obtain a tourist visa for up to 1-year stay. Please make sure that your passport has a validity of at least 4 months upon arrival into Chuuk and you are also required to show a confirmed ticket to leave Chuuk, or any country you are transiting through, prior to boarding your flight. For more information please visit the Chuuk Visitor’s Bureau.

Staying there… The local currency is the US Dollar (US$). The majority of established hotels, shops and restaurants accept major credit cards. However, smaller establishments are likely to only accept cash payments. ATMs are available however guests are advised to exchange money prior to arrival and to ensure you have small denominations on hand. We work with a number of hotels and resorts. Should you wish to extend your stay in Truk, our team will be pleased to assist you.

Climate and weather… Truk, as part of the Federated States of Micronesia (FSM) is a tropical country and the climate is fairly even all year round. The average high is 30°C (86°F) whilst the average low is 25°C (77°F) throughout the year. The more humid climate is during the summer months (Jun-Sept) whilst trade winds come mainly from the northeast between December and June.

Time zone… The local time is 10 hours ahead of UTC (GMT).

Health… Health care is readily available in the FSM and a major hospital is located within each of the states. There are no tropical diseases, however, to prevent stomach ailments we recommend travelers follow normal precautions with food and drink bottled water only. Please consult your doctor or nearest health care professional for up-to-date medical travel information well before departure. Visitors arriving from countries that are affected by Cholera or Yellow Fever must show proof of immunization upon arrival.

What dive experience level is recommended for Bikini Liveaboard trips?

Diving on the Bikini wrecks is respectfully recommended for technical divers only with a minimum of PADI Tec 50 level or equivalent, with wreck experience, as the average depth of the wrecks is around 50 meters (150 ft). To get the most out of your dives in Bikini Atoll, highly recommended are:

TDI – Advanced Nitrox & Deco Procedures
IANTD – Tech Nitrox
NAUI – Tech Nitrox & Deco Techniques
ANDI – Technical Nitrox

You can send your enquiry via the form below.

World War II Warships of Truk Lagoon