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Certified Boat Dives

We never mix our groups which means if you’re certified, you’ll only dive with other certified divers. Because we have a fleet of boats, we can cater to both advanced and rusty divers (rusty divers get a free can of WD-40).

Boat Dives Include:

- We have the only 6-passenger dive boats on Kauai
- We supply Dive Computers at no extra charge
- You tell us what sites you want to dive, not the other way around
- Unless you ask, we wont dive you more than once at any site
- We will rinse and store all your gear in a secure locker for your next day of diving

Premium 3-tank Boat Dive

Tuesday & Friday Check in at 7 a.m.

  • 3 dives
  • full site briefing
  • light breakfast
  • snacks & drinks
  • light lunch
  • weights, tanks and computer

Many have asked for it, many have dreamed about it, and even more will get the chance to try our new Premium 3 Tank Boat Dive. Get more time in the water, more time exploring the ocean’s depths and more time having fun with our Premium 3 tank dive. With over 23 dive sites to choose from you can’t go wrong. We’ll chase the best conditions on our quest to show you the wonderful side of the ocean in Kauai.

First dive from 65′ to 95′, second dive 45′ to 75′, third dive 35′ to 55′.

▲ Book Now!

Twilight 2-tank Boat Dive

Tuesday & Friday. Check in times vary; depending on time of year.

  • 2 dives
  • full site briefing
  • pizza, snacks & drinks
  • weights, tanks and computer
  • diving lights

We thought of an excellent way to help new divers and our favorite divers get into the water and into the fun of night diving. This two tank boat dive begins with plenty of light and gets you wet before dark. In this unique period of time you will get to see dramatic changes in the behavior of sea life, corals, and turtles.

Your second dive from our Radon dive boat dive occurs after dark when the nocturnal sea life begins it’s morning. Experience the change between dusk and night with our knowledgeable Captain and PADI Certified Dive instructors.

First dive from 65′ to 95′, second dive 35” to 60′.

▲ Book Now!

Niihau 3-tank Boat Dive

Mid May through September–Monday & Thursday. Check in at 6:20 a.m.

  • 3 dives
  • full site briefing
  • light breakfast
  • snacks & drinks
  • light lunch
  • weights, tanks and computer

Fathom Five is extremely proud to offer a one-of-a-kind adventure with our incredibly talented crew to the Forbidden Island of Niihau, featuring some of the best diving in the state! Our 38′ dive boat enables us to get you to Niihau and it’s moon shaped cousin, Lehua in more comfort with fewer people than anyone else on the island! Full shade options, state of the art navigation systems, CD/DVD players, even 2 camera rinse tanks!

First dive from 85′ to 105′, second dive 60′ to 85′, third dive 45′ to 65′.

▲ Book Now!

2-tank Boat Dive

7 days a week! Check in 7:30 a.m. & 1 p.m.

  • 2 dives
  • full site briefing
  • snacks & drinks
  • weights, tanks and computer

Our custom build Radons were built in Hawaii specifically for Hawaiian waters. Fathom Five is the only 6-pack diving operation in Kauai. This enables us to give every diver the attention they need to feel safe and have fun!

We never mix our groups. This means if you’re certified, you’ll only dive with other certified divers. Because we have two boats, we can cater to both advanced and rusty divers (rusty divers get a free can of WD-40). We frequent 20 different dive sites only 3-5 minutes from the boat harbor making a 2-tank boat dive a half day trip and the customers choose the site!!

First dive from 65′ to 95′, second dive from 30′ to 60′.

▲ Book Now — AM!


▲ Book Now — PM!

Night Boat Dive

Thursday. Check in times are seasonal.

  • 1 dive
  • full site briefing
  • weights, tank and computer
  • diving lights

A 1-tank night boat dive, usually at Sheraton Caverns with a maximum depth of 65′. We give a thorough pre-dive briefing and have one incredible set of employees, so night diving experience is not necessary. As a bonus we throw in a light bulb and a battery, figuring out how to get it to make light is your deal! What do you get to see on a night dive? Well that’s all the fun, it’s like day and night down there, everything changes! The famed Spanish Dancer comes out at night and wow, it is a sight to see!

Witness moray eels, octopus, the occasional shark all feeding at night. Many fish are unrecognizable at night; their differing abilities allows many to change colors while others emit protective layers around them, some even grind their teeth while snoozing away! Kauai scuba diving has never been more fun then at night with the Fathom Five crew!

▲ Book Now!

Boat Dive Rental Equipment:

  • Full package: Mask, fins, snorkel, regulator, weight integrated BCD, 5mm full or short wetsuit
  • Pieces: Mask, fins & snorkel. Regulator. Weight integrated BCD. 5mm full or short wetsuit.

We are gear nerds at Fathom Five. We love SCUBA and all it’s toys. As a result of this passion we keep our equipment new, clean and in perfect working order. We rent the high quality gear so you can feel safe and have fun while diving but we also have a tendency to sell some of the stuff too.

Refresher Option

Check in 30 minutes prior to standard dive check in time.

For the certified diver who hasn’t dived in more than 2 years. Add this refresher option to any dive. Includes an 30 minutes academic review with an instructor discussing safety procedures, gear, hand signals, etc., followed by the dive experience of your choice.

New 2020 F5 pricing — pre-tax (8.072%)

Certified Boat Dives

  • 2-tank boats — $150 + tax
  • 3-tank boats — $250 + tax
  • Niihau — $370 + tax
  • Twi / night boat — $170 + tax
  • Night Boat — $145 + tax

Shore Dives

  • Koloa 2-tank cert — $117 + tax
  • Koloa 1-tank cert — $102 + tax
  • Koloa 1-tank night — $122 + tax
  • Koloa twi / night — $137 + tax
  • Koloa 2-tank DSD — $177 + tax
  • Koloa 1-tank DSD — $137 + tax
  • Koloa 2-tank tag — $95 + tax
  • Koloa 1-tank tag — $80 + tax
  • Tunnels cert — $150 + tax
  • Tunnels DSD — $210 + tax
  • Tunnels tag — $110 + tax
  • Tunnels night — $150 + tax
  • Tunnels twi / night — $170 + tax


  • OW e-learner — $550 + tax (e-learning & logbook included)
  • OW cert class — $520 + tax (crew pack included)
  • 3&4 Boat upgrade — $145 + tax
  • SCUBA diver — $350 + tax
  • Open Water Referral — $340 + tax
  • Open Water Referral 2 dives — $225 + tax
  • AOW cert class — $550 + tax
  • AOW e-Learner — $600 + tax