Mermaid I is a deluxe standard professional dive yatch runs by Mermaid Fleet, offering diving trips in Indonesia according to the seasons, it can accommodate 15 guests.
Mermaid II is a deluxe standard professional dive yatch runs by Mermaid Fleet, offering diving trips in Indonesia according to the seasons, it can accommodate 18 guests.
Mola Mola 01 is a deluxe standard liveaboard, offering professional scuba diving trips in Indonesia according to the seasons, it can accommodate 16 guests.
Mutiara Laut is a high-end standard liveaboard, offering both diving and leisure cruise trips in Indonesia according to the seasons, it can accommodate 14 guests.
Naga Biru is a deluxe standard liveaboard, offering both diving and leisure trips in Indonesia according to the seasons, it can accommodate 12 - 16 guests.
Nautilus Belle Amie is a luxurious vessel managed by Nautilus Fleet, it offers scuba diving trips to Socorro and Guadalupe Island depending on the season. It can accommodate up to 30 - 32 guests based on the selected route.
Nautilus Explorer is a professional superior vessel runs by Nautilus Fleet, it offering dive liveaboard trips to Socorro Islands and Guadalupe Island according to the dive seasons. It can accommodate up to 25 guests.
Nautilus Gallant Lady is a deluxe professional yacht runs by Nautilus Fleet, it offering dive liveaboard trips in Mexico, it accommodates only 12 guests.
Nautilus Under Sea is a professional deluxe vessel runs by Nautilus Fleet, formerly known as Undersea Hunter, it offering dive liveaboard trips to Socorro Islands and Guadalupe Island according to the dive seasons. It can accommodate up to 19 guests.
Navis 1 is a comfortable standard professional dive yacht, offering scuba trips around Philippines according to the seasons, it can accommodate 18 guests.
Nawasena is a 44-metre Indonesian phinisi liveaboard for 14 guests in seven ensuite cabins: four flexible Ocean cabins, two upper-deck Balcony cabins and one full-beam Master Suite. Built from ironwood and teak and refitted in 2026, the yacht combines private guiding, Nitrox diving, generous dive facilities and refined indoor and outdoor spaces. Published expeditions range from Komodo and Raja Ampat to Alor, Banda Sea, Triton Bay, Halmahera and North Sulawesi.
Ocean Sapphire is a deluxe standard liveaboard, offering dive & leisure charter trips in the Maldives according to the seasons, It can accommodate 22 guests.
Oceania is a deluxe standard dive liveaboard, it focus on providing scuba diving charters within the Bismarck Sea as well as some other areas within Papua New Guinea, it can accommodate up to 16 guests per trip.
Odyssey is a deluxe standard dive yacht runs by Seafari Fleet, offering scuba trips all around the Red Sea (Egypt & Sudan). It can accommodate 26 guests.
Okeanos Aggressor II is a deluxe standard professional dive yacht runs by Aggressor Fleet, offering scuba diving trips in Cocos Island (Costa Rica) year round, it can accommodate 22 guests.
Oman Explorer is a deluxe standard dive liveaboard runs by Extra Divers Fleet. It mainly offers diving liveaboard trips in Hallaniyat Islands of Oman during Oct to mid May every year, it can accomodate 22 guests onboard.