Production has started for Project Neptune, the luxurious, limited edition personal submarine by Aston Martin and Triton Submarines. Following the successful completion of its design phase, the first model will be unveiled to the public later this year. Aston Martin’s collaboration with Triton Submarines combines beauty and elegance with a safe, reliable design that offers nearly 360º visibility. This personal luxury submarine will be able to dive to 500 meters of depth and reach sprint speed in excess of 5 knots while carrying a pilot and two passengers. Aston Martin’s in-house team has created a range of various combinations of color and trim combined with the vehicle’s sporting, luxury and maritime characteristics and further customization and personalization options will be available. Don’t forget to check other interesting projects: Triton 6600/2 and Dragon.

With the ability to hold up to 11 people and hit depths up to 1,700 meters, these U-Boat Worx Cruise Series Submarines are ideal underwater vessels for larger groups. All six models, from the five-person, 500-meter sub to the 11-person, 200-meter unit offer omnidirectional movement with an electric thruster system, twin large acrylic spheres that provide distortion-free views, and revolving seats to sure you’re always facing the ideal direction. They can run for up to 18 hours per charge, automatically raise themselves if you go too deep, and can be equipped with options like manipulator arms and cameras to expand their functionality.

Ortega’s Mk. 1C three seater submersible is a personal submarine, fitted with two high-performance electric motors. It is built for both above and below sea travel. It’s also equipped with an HUD navigation system, on-board breathing apparatus, and a fully equipped trimming tank (to control buoyancy). Optional upgrades include Magnetometers, sonar, an extra air supply, or a larger cargo hold. This badass sub also has a range of 92 miles and can travel over water at 10.4 mph or underwater at 12.7 mph. No price has been announced, but you can count on this killer underwater craft costing nothing shy of a fortune.

The latest must-have for billionaire yacht owners – the Triton 6600/2 – allows them to explore shipwrecks or other spots at new depths thanks to a revolutionary new passenger compartment that remains at surface pressure even while diving more than a mile beneath the sea. Priced from $5.5million (£3.8million), the personal submarine has the thickest transparent acrylic hull ever made, providing a spectacular view of marine life at a depth of up to 6,600ft. Built by Triton Submarines, based in Vero Beach, Florida, the two-seater is billed as the world’s deepest diving submersible with an acrylic hull. With a top speed of nearly 3.5mph (three knots), it takes about an hour for the pilot and a passenger to reach the sub’s maximum depth while they explore the sea for pleasure or research. Triton 6600/2 has a maximum dive time of 10 hours, although its life support system, with an emergency oxygen supply, lasts 96 hours. With air conditioning and high-output LED lights, the submarine weighs 17,640lbs and is 13ft long, nearly 11ft wide and nearly 7ft tall.

Deepflight, was founded in 1996 by ocean engineer Graham Hawkes. Together with a group of seasoned designers and engineers, they’ve developed a fundamentally new type of personal submarining that is a combination submersible and high-performance aircraft called “Dragon”. The “Dragon” has a fixed positive buoyancy, meaning that it will always naturally float back to the surface. It offers a proprietary technology that monitors and manages critical functions, allowing users to pilot the submarine with minimal training and provides the ability to set the depth limit on any particular dive. The deepflight “Dragon” enables complete freedom to cruise alongside deep coral reefs and hover over ancient shipwrecks. Four electric thrusters and an underwater lithium battery pack can operate for up to six hours between charges. At 1800 kilograms and only five meters in length, it is able to fit on most yachts, with little to no retrofit required.

The Deepflight Super Falcon Mark II is a 17-foot long two-seater submarine, each seat with its own bubble-glass cockpit for an unparalleled immersive experience. It comes with a set of wings on the side and stabilizers in the rear which make it a very agile vessel and can explore the underwater world to a depth of 400 feet. Also, the submarine is fully electric, so you don’t have to worry about the environment either. Priced at a $1.7 million, the Super Falcon Mark II is a very expensive toy – so naturally Richard Branson owns one.