Designed by ocean legends

Honu submersibles were custom-designed and built by DOER Marine and Sylvia Earle, legendary ocean scientist and advocate.

DOER has a prestigious history of submersible design, construction, and operations. Their perfect safety record has enabled countless successful dives launched from luxury yachts and world-class scientific research vessels.

    • Two submersibles for tandem dives

    • Manned submersibles: 3 persons (2 passengers and 1 pilot)

    • Hull inside diameter of 190cm / 74.8 inches

    • GVW of 9 metric tons

    • Fully certified as dual class submersibles (research and passengers) by recognized classification society DNV

    • Operational depth rating: 1200m

    • 8 hours mission time (96 hours reserve life support)

    • Capable of going fully silent on the bottom (thanks to passive air filtering solutions first approved and classed for use on submersibles by DOER on a 10-person system)

    • Can dive both during the day and at night (vastly opening opportunities to identify new species and to observe nocturnal animal behavior)

    • 4K filming capabilities

    • 2x 5 function manipulators with an array of samplers (cores, suction, bio box, sediments)

    • Water sensors (CTD, oxygen, pH, turbidity)

    • Sound recording (hydrophone with 10Hz to 200kHz frequency range)

    • Lasers for video measurements

    • Sonar for collision avoidance and mapping

    • 4x Film lights and 2x operational lights and 4 additional light channels available

    • USBL with integrated navigation

    • Modem

    • VHF radio

    • Underwater communications system

    • Surface beacons, strobe & RF

  • o Serial RS-232, RS-485, CAN

    o Ethernet 10, 100, 1000

    o 5V, 12V, 24V, 48V voltages

    o 150W, 200W and 600W available wattages

    o Custom interfaces available

“Every time I slip into the ocean,
it's like going home.”

~Sylvia Earle

Dives begin in 2025

We invite you to be amongst the first to dive with us in beautiful French Polynesia aboard our Honu submersibles. Adventures begin in late 2025 and will fill up quickly, so we encourage you to hold your place in line. No deposit is required at this time.

Still have questions? Check out our FAQs or Science page.