Up to 50% off selected upcoming trips if booked before 16 Apr 2023
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New cheaper flights into Palau KOR through Taipai TPE with China Airways

Why you should choose an Aggressor Liveaboard:
The mission of Aggressor Liveaboards is to provide their guests with the highest quality, most innovative and safest trips possible.
They offer unparalleled customer service on their small group adventures, accessing the most exciting destinations around the world to offer the best experience possible.

The Rock Islands Aggressor and Palau Aggressor are sisterships and 106’ long with a 30 ft. beam, built and powered for comfort, safety and stability and comfortably accommodates 18 guests in 9 spacious cabins.
8 deluxe cabins which have a queen and single bunk, a private head and shower and one double cabin (#9) with a full and single bunk, private head and shower.
Cabin #9 is located on the dive deck level.
Each stateroom has extra storage and individual climate controls.

There is a beautiful spacious salon, 50’ of sun deck with shading, chaise lounges and deck chairs, bar, grill, and a complete photo/video center.
Rock Islands Aggressor is diesel powered and cruises at 10 knots and has 110 volt power onboard

Palau is a year round destination with something for every season.
While German Channel has many resident Manta Rays, during the mating season, December through March, guests may see as many as 20 – 30 rays!
February and March offer large schools of Moorish Idols, Unicorn Fish and several species of Butterfly Fish.
All year round, the Palau Aggressor crew encounters massive bait balls of scad in and around Ulong and German Channel and on the reefs of Blue Corner and Siaes Corner.
Read the guest reviews

Rock Island Aggressor - schedule

Rock Island Aggressor - prices and what's included

Prices are per person per trip based on 2 persons sharing a cabin.
Exact pricing is available on the schedule here as prices vary dependant on the time of year, destination and the length of the trip and sometimes special offers are available.

The trip price includes:
Accommodations aboard the yacht
Compressed air tanks, weights & belts
All meals and snacks, non-alcoholic beverages, local beer and wine.

The trip price does not include
Airport transfers - Taxis are not readily available at the Koror airport.
All transportation must be pre-arranged. The boat can prearrange transfers through Neco Marine in advance, however these are not included in your charter and must be done in advance:
Airport to Yacht for guest arriving the day of boarding $25 per person (if not transferring from a hotel)
Yacht to Airport, day of disembarkation $25 per person
Hotel to Yacht the day of boarding $5 per person
Yacht to Hotel the day of disembarkation $5 per person (Koror Hotels) - Guests can pay Neco Marine while on the bus or they can pay at the Neco Marine store at the end of their trip.
Airfare (international and domestic)
Dive insurance is mandatory as is your own personal dive computer (You can rent one for the trip if you do not have your own).
As well as the Mandatory Dive Insurance we highly recommend Trip and Travel Insurance on the off chance of missed or cancelled flights / lost baggage, documents, money or passport / Covid issues or any other unforeseen problems that could possibly occur.
Dive Assure Insurance offers cover for all these eventualities as well as complete Dive Insurance all in one package.
Equipment rentals
Nitrox fills
Certification or specialty courses
Hotel stays/day roomsDinner on final evening
Crew gratuity
Port/park fees and taxes of USD $240 (7 nights) or $270 (10 nights) and a fuel surcharge of USD $150 for 7 nights or $215 for 10-nights to be added, these fees will be paid onboard the yacht by MC/Visa or US cash.
MC/Visa accepted onboard.
A single supplement rate is charged 65% of the charter rate for a guaranteed private room.
The 65% is based on the full published price and not available on discounted trip price.

Booking and cancellation Terms and Conditions:

Booking deposit: 50% of your invoice total is required within 7 days of booking to confirm the booking.
The remaining final payment of 50% is due to 90 days prior to the departure date to complete your booking.
Individual booking made less than 90 days before the departure date are due full payment upon booking to confirm your booking.
Cancellation at any stage involves forfeit of the money already payed.

Full charter:
Booking deposit:
10% - within 7 days of booking - non-refundable
Second deposit:
20% 180 days prior to departure - non-refundable
Balance due
90 days before departure - non-refundable

Diving Equipment Rentals (USD) Per week
Full Set (regulator, octopus, BCD, wetsuit, mask, fins, dive computer) $ 175
Regulator with octopus $ 60
Computer $ 60
BCD $ 60
Wetsuit (shorty 3mm) $ 50
Mask / fins / snorkel $ 50
Torch $ 8 per night
100 cubic ft/15L Tank Rentals
The yachts will make every effort to have a 100 cu. ft. tank available when requested but cannot guarantee availability. If the request is met, it will be on a first come first serve basis and there may be a charge for it.

Nitrox Fills and Unlimited Nitrox
Nitrox Unlimited: $100 (7 nights) / $150 (10 nigihts)
This includes all Nitrox fills at 32% for certified Nitrox Diver, proof of certification required.

Nitrox Student Fills: $80 (7 nights) / $130 (10 nights)
This includes all nitrox tank fills at 32% beyond the certification level and only available to those who take the course onboard.

Rock Island Aggressor - Video

Rock Island Aggressor - Video

Rock Island Aggressor - cabins

Rock Islands Aggressor comfortably accommodates 18 guests in 9 spacious cabins.
The cabins include 8 deluxe which have a queen and single bunk and picture window and one double cabin (#9) with a full and single bunk, private head and shower and porthole window looking onto the dive deck.

  • Rock Island Aggressor


  • Rock Island Aggressor

    Hanging on the sun deck

Main Deck Deluxe Staterooms (cabins #1-8)
are on the main deck have a queen size bed and a single bed in bunk style layout with a picture window.
All Staterooms have a private bathroom and shower with hairdryer and individual climate control.

Main Deck Double stateroom (cabin #9)
is located on the dive deck has a double bed and a single bed in bunk style layout and porthole window looking onto the dive deck.
All Staterooms have a private bathroom and shower with hairdryer and individual climate control.

Rock Island Aggressor - itineraries

Getting to Palau : updated 28June 2022
As United airlines are still the only main airline into Koror right now, options are limited but they are becoming less so.
Clients from North America can drop in 5 times a week with United via Guam.
Flights from Europe and Australasia can drop in via Manila on Friday only at the moment but this is set to increase to twice a week from August as Tuesday flights are added.

As to the best time to go:
The visibility is pretty amazing all year round, but whilst it is often 40m+ during July to Sept it can drop to around 15-20m due to heavier rains and stronger winds.
Though you can dive in Palau all year round the best conditions exist between Oct/Nov and April.

Sample Itinerary

Sunday – Prearranged pick up from Palau hotels at 4 – 5 pm for transfer to the yacht for boarding.
Guests may board beginning at 4 pm.
Yachts depart dock Monday 6 – 6:30 am.
Monday – Diving begins Monday morning until Saturday noon. Cocktail party at 6 pm with dinner ashore.
Sunday – Check out is at 8:00 am. The crew will assist organizing transportation to either the airport or a local hotel if you are extending your stay.

Top Dive Sites - Palau

Big Drop-Off
A wall dive that begins as shallow as 2’ at low tide and drops to 600’. It is considered by most to be the most beautiful wall dive in Palau because of its abundance of hard and soft corals, seafans, schools of pyramid butterflyfish, and a multitude of tropical reef fish.

Blue Corner
The best known and most highly rated dive site in Micronesia features a shallow coral shelf that projects out into the ocean and has vertical walls on both sides. An upwelling created by the currents attracts schools of fish and large pelagics to the top edges of the walls. The dive is best known for its schools of gray reef sharks that cruise the edge of the wall. Two resident Napoleon wrasses often accompany the divers throughout their dive. Dogtooth tuna, eagle rays, manta rays, white tip and hammerhead sharks, turtles, schooling barracudas, and schools of reef fish populate the site.

Blue Holes
This is a series of four large holes in the top of the reef that converge to form a gigantic underwater chamber. The chamber has a huge opening on a wall that is home to soft corals, sea fans, sea whips and hard corals. Large pelagics often encountered here include tuna, jacks, gray and white tip reef sharks, barracuda and eagle rays. Grouper, Napoleon wrasse, triggerfish, Moorish idols, butterflyfish, anemones and turtles are common at this site, which is situated next to Blue Corner.

Chandelier Caves
A short swim through a tunnel at depth of 35’ opens into a cave consisting of three chambers. Beautiful stalactites formed by water dripping down through the rock island above, hang from the ceilings and give the caves their name. Tiny holes to the outside wood allow fresh air to enter the chambers so that divers can surface and admire the beautiful surroundings.

Denges Passage
This natural channel, situated on Palau’s eastern coast, is home to an entire family of cuttlefish. The uncommon creatures, related to the squid family, are as accommodating to photographers as they are rare. They are not often encountered by divers because of the relatively few locations in he world where they can be found, their ability to remain relatively motionless, and their excellent camouflage.

German Channel
This man-made channel through the southwest side of the barrier reef is home to two diving areas. One site, known as Manta Rock, is a natural cleaning station where giant manta rays come to have their bodies cleansed of parasites and debris by cleaner wrasses. Gray reef sharks also often avail themselves of the wrasses’ services. The area is also inhabited by barracudas, snappers, titan triggerfish, gobies, lionfish, leaffish, and an octopus. Nearby is a coral garden that features crocodile fish, nudibranchs, flatworms, anemones and clownfish.

New Drop-Off
Halfway between Blue Corner and Big Drop-Off, this vertical wall is similar to Blue Corner in that it is a shallow shelf that juts out into the ocean, catching the current and creating an upwelling that attracts schools of pyramid butterflyfish and barracudas, along with a number of gray reef sharks. The steep wall is covered with soft corals and seafans.

Ngedebus Coral Gardens
One of the best collections of hard corals in the Pacific, this dive features a spur and groove reef structure that supports turtles, cuttlefish, anemones, tridacna clams, white tip reef sharks, and thousands of small schooling fish.

The island of Ngerchong, just beyond Denges Passage has two dive sites nearby: Ngerchong Outside and Ngerchong Coral Gardens. Ngerchong Outside is a sloping wall dive featuring sea fans, anemones, soft corals and many hard coral formations. Sharks, bumphead parrotfish, and schooling fish are frequently seen here, as well as an occasional manta ray. The Coral Gardens, also known as Ngerchong Inside, is probably the best dive in Palau for seeing an abundance and variety of hard corals. Table coral, staghorn coral, elkhorn coral, mushroom coral and brain coral are just some of the varieties of corals found here. In addition, many anemones with clownfish, along with cuttlefish, turtles and other fish thrive here. This dive can be enjoyed at any depth between 10’ and 80’.

The island of Peleliu, at the southern tip of the main archipelago of Palau, is bordered by magnificent walls. The dive sites include Peleliu Corner, Yellow Wall, and Orange Beach, among others. Peleliu dive sites are mainly steep walls covered with sea fans, sea whips, hard corals and anemones, but dominated by soft corals. Peleliu is an excellent place to observe large pelagic life, particularly sharks.

Short Drop-Off
A sloping wall just outside the entrance to Koror Harbor that is covered with giant seafans. The top of the wall is a beautiful coral garden loaded with tropical fish and invertebrates.

Siaes Tunnel
An extraordinary deep dive on the west side of the Palau, close to the Ulong Channel. The dive begins on a sheer wall with the opening of the tunnel starting at 70’. You enter through an opening, which is about 50’ across and 20’ high, and swim through the tunnel, which parallels the wall for 150’. The inside of the tunnel is a large cavern with a ceiling at 80-90’ and the floor at 120-130’. Halfway through the tunnel is a “Window” in the wall that looks out onto the deep blue. You exit through a large opening on the wall at 80’. Stingrays, turtles, schools of jacks, and sharks can be seen in and around the tunnel.

Ulong Channel
This channel is located on the west side of Palau, close to Siaes Tunnel and Wall. Its entrance is surrounded by walls that are topped by beautiful coral gardens. On the incoming tide, the mouth of the channel is filled with gray reef sharks. The channel extends for a distance of approximately one-half mile, averaging 100’ in width. The maximum depth is about 60’. Coral covered walls run the length of the channel on either side. A shallow ridge running the center of the channel is blanketed with soft corals, hard corals, sea fans, and anemones. Unique to this site is a huge patch of plate coral resembling lettuce leaves that is home to schools of squirrelfish, soldierfish and glasseyes. The current provides a gentle push, resulting in a beautiful, leisurely ride along the channel.

Wonder Channel
Located within the rock islands just a short distance from Jellyfish Lake and Clam City, this channel is best dived on the east side along a wall that starts at the surface and reaches a depth of 80’. Soft corals, sea fans, anemones, blue and red starfish, crown of thorns star-fish, crabs, pipefish, and a large variety of sea slugs, flat worms and nudibranchs can be found along this wall.

Wreck of the Iro Maru
A 145’ long merchant ship sunk during World War II by American bombers, the Iro Maru sits upright in 120’ of water just 10 minutes south of Koror. Three mast and gun turrets at the bow and stern support a large variety of invertebrates and hard corals. The main deck is at a depth of 80’with open holds containing oil drums and machinery.

Rock Island Aggressor - specs

The Rock Island Aggressor was built to U.S. Coast Guard standards with a full complement of safety equipment.
Length: 106 ft.
Beam: 30
Passengers: 18
Crew: 6

Rock Island Aggressor - diving

The Top 10 reasons to go to Palau:

1. Stunning Coral Reefs: Palau has some of the most beautiful and diverse coral reefs in the world, with over 700 species of coral and 1,500 species of fish.
2. World-Class Wrecks: Palau is home to some of the most impressive wreck dives in the world, including the famous Japanese supply ship, the Iro Maru.
3. Manta Rays: Palau is one of the few places in the world where you can consistently see manta rays year-round.
4. Shark Action: Palau is famous for its shark diving, with opportunities to see a variety of species, including grey reef sharks, whitetip reef sharks, and even hammerhead sharks.
5. Jellyfish Lake: Palau is home to Jellyfish Lake, where you can swim with millions of non-stinging jellyfish.
6. World Heritage Site: Palau's Rock Islands were declared a UNESCO World Heritage Site in 2012 due to their natural beauty and ecological significance.
7. Unique Dive Sites: Palau has a range of unique dive sites, including Blue Corner, which offers the opportunity to dive in a strong current and see large schools of fish.
8. Underwater Caves: Palau has a number of underwater caves and swim-throughs that offer a unique and exciting diving experience.
9. Conservation Efforts: Palau is committed to marine conservation and has created a number of marine protected areas to ensure the sustainability of its diving industry.
10. Diverse Marine Life: Palau's diverse marine life includes not only coral and fish, but also a variety of invertebrates, reptiles, and mammals, such as sea turtles and dugongs.

These are just a few of the reasons why Palau is a world-class diving destination that should be on every diver's bucket list.

Palau liveaboard diving is consistently chosen as one of the world's premiere diving destinations by several international diving publications, Palau features enchanting topside topography as well as breathtaking underwater landscapes. Experience big fish action at the Blue corner and New drop off. Shafts of light cutting through deep shadows create a near-religious experience at the Blue holes, German channel, Chandelier cave, Pelieu, Siaes tunnel, Ulong channel, Wrecks and many more Palau offers some of the most unique holiday possibilities: its natural beauty and untouched wilderness, intact culture, remoteness and stability combine to offer a fantastic destination for adventure seekers.

The spectacular walls along the barrier reef, including such favorites as Blue Corner, Ulong Channel, Big drop-off and many other sensational offer dive sites yet to be charted. You can expect mostly wall and drift diving with visibility ranging from 20m / 70 feet to 50m / 150 feet depending on prevailing conditions. All our boats are liveaboards for people enthusiastic or serious about their diving but also welcome snorkellers and non-divers who will have their own separate itinerary.

It is located between Guam, the Philippines and Papua New Guinea. Palau is a 400-mile long archipelago, which hosts one of the world's most unique phenomena - " Rock Island". These mushroom like islets are uninhabited and located in a large lagoon that has a vast concentration of corals, fish and other marine life. White sand beaches, lush jungle and remote waterfalls are just among the highlights of Palau.

The islands of Micronesia are scattered over three million square miles of the North Pacific. Palau is the Pacific’s newest nation, a Mecca for divers and home of the exquisite Jellyfish Lake. The Republic of Palau lies east of the Philippines and comprises of some 350 islands. They are grouped in six clusters stretching to 400miles from North to South, Kayangel Atoll to Tobi Islands.

Palau is world renowned as an unsurpassed dive destination that also offers the sublime Rock Islands, dramatic waterfalls, pristine white sand beaches and some of the most intriguing native flora and fauna found anywhere in the Pacific Ocean. Explore the beauty of Palau with the Big Blue explorer.

Palau has been described as one of the Seven Underwater Wonders of the World, with 700 species of coral and 1,200 species of identified fish. Palau provides some of the best diving to be found in Micronesia and ideally is suited for advanced divers.

The spectacular walls along the barrier reef, including such favorites as Blue Corner, Ulong Channel, Big drop-off and many other sensational offer dive sites yet to be charted. You can expect mostly wall and drift diving with visibility ranging from 20m / 70 feet to 50m / 150 feet depending on prevailing conditions.

Rock Island Aggressor - faqs

Transportation to and from the Liveaboard:

Neco Marine - Transfers:
Airport to Yacht for guest arriving the day of boarding $20 per (if not transferring from a hotel)
Yacht to Airport, day of disembarkation $20 per person
Hotel to Yacht the day of boarding $5 per person
Hotel to Yacht the day of boarding $5 per person
Yacht to Hotel the day of disembarkation $5 per person (Koror hotels)

Transfers are provided by Neco Marine.

Guests may pay Neco Marine while on the bus or they can pay at the Neco Marine store at the end of their trip.
NO taxis are available at the Koror airport at any time.
All transportation must be pre - arranged. We highly recommend arriving in Palau prior to Sunday to get acclimated to the time change

What time is the embarkation, boarding and departure?

Guests arriving at the Koror (ROR) International Airport on Sunday evening will be greeted by a uniformed crewmember or a Neco Tourist Agent.

There are no phones or taxis at the small airport so they will assist in your transfer to the yacht.

If you are already on island, you may board the Aggressor at any time after 4 pm on Sunday.

Guests may board the boat up until Monday morning, the boat departs the dock at 6:00 am - 6:30.
The Liveaboard docks at the Neco Marine (Malakai) Harbor in Palau.
After a week of diving the Aggressor returns to the dock Saturday afternoon after lunch.

Checkout is Sunday morning at 8 am. The crew will assist organizing transportation to either the airport or a local hotel if you are extending your stay.

Standard Palau FAQS

Please note these are generic FAQs about Palau in general and not always boat specific.
If you are unsure about something please ask us to get confirmation.

Getting to Palau
We recommend that you arrive one night prior to the boat’s departure date to avoid any issues.
United Airlines currently holds flights to Palau via Guam (daily) or Manila on certain days.
Guam can be reached from Hawaii, Western USA, Australia, Seoul and Tokyo.
Manila is a major hub serviced by flights from Singapore, Bangkok, Hong Kong and Kuala Lumpur, amongst others, however, check up-to-date fares and schedules on United Airlines website or any booking agency like Kayak for instance.
Also be sure to check the up-to-date baggage restrictions and requirements for your flight.
Occasional direct flights to Palau are available from Taipei.
We recommend that you make reservations well ahead of time as well and purchase travel insurance also to cover any last-minute cancellations or health issues.

Entry requirements
U.S. citizens must show proof of U.S. citizenship (birth certificate or passport). Non-U.S. citizens must show passport. There is a free 30-day visa issued upon arrival.

Upon arrival
At the Palau airport, you will be picked up by your hotel or the boat representative and transported to the boat dependant on when you arrive.

Bring very casual and lightweight clothing. Quick-dry material or light cotton works well, with maybe one long-sleeved shirt or sweater for chilly nights.
We also recommend a waterproof jacket or windbreaker. On the island, dress is very casual, though beachwear in town is inappropriate. We recommend bringing hats,sunscreen and sunglasses.

Palauan and Englishare both official languages. Both are widely spoken.

The U.S. dollar is used throughout Palau. Credit cards are widely accepted.
There are quite a few 24-hour ATMs in banks on the main road in Koror, The Bank of Hawaii and Bank of Guam are represented.

24-hour electricity comes in 110 and 220/240 volts, with standard U.S. outlets for two/three prong plugs.

There is no malaria.
We recommend drinking bottled water.
The hospital on Palau is the Belau National Hospital, located in Koror and there are also two private clinics.
There is a hyperbaric chamber at the Belau National Hospital.<

Time zone
Palau, Japan and Korea are 9 hours ahead of GMT (Greenwich Mean Time, in London), Palau = GMT + 9.

Year round our climate is pretty uniform, at an average of 82 degrees F (27 C). Average humidity: 82 %. Rainfall, at 150 inches/year, can occur throughout the year.
Though sometimes it rains more during July through October, this “rainy season” doesn’t have a definitive start or end, and the weather is always changing and unpredictable.
However, it is always dive-worthy.
The warm tropical waters of Palau are pleasant throughout the year averaging 27°C (82 °F). Most guests will find a 3mm shortie or even a skin suit is appropriate, though if you feel the cold easily you may wish to opt for a 3-5mm long suit.

Hotel Reservations
Accommodations in Palau range from budget motels to very upscale resorts.

General and Diving Health
Health care is readily available in Palau. The Belau National Hospital is a professionally staffed hospital with an experienced barotraumas team. Follow normal precautions with food whilst travelling to prevent stomach upsets and be sure to drink bottled water only.
On board you will find a fully stocked first aid kit, AED and medical grade O2. Basic supplies will be made available to you, if you require medication please ask your cruise director. For diving related emergencies there is a recompression chamber in Koror.
Speedboat evacuation from the boat would be necessary thus diving specific insurance is a must on any liveaboard dive trip.
Dive insurance is mandatory as is your own personal dive computer (You can rent one for the trip if you do not have your own).
As well as the Mandatory Dive insurance we highly recommend trip cancellation and travel insurance on the off chance of cancelled flights / lost baggage / Covid issues or other unforeseen problems that hopefully will not occur.
Dive Assure offers covers for all these eventualities as well as complete Dive insurance all in one package.

What dive experience level is recommended for Palau Liveaboard trips?
Whilst most dives are suitable for divers of all levels, beginners may find some dives challenging and prefer to skip the dive.
Currents are to be expected at sites including Blue Corner and Ulong Channel. your cruise director and dive team will be on hand to advise so you may decided whether the dive is suitable for you.
Most Liveaboards require advanced experience or taking your PADI Advanced course whilst onboard to maximise your enjoyment from the trip.