Marine

Going greener than average with their latest superyacht, Red Yacht Design and Dykstra Naval Architects skip diesel-electric in favor of diesel-kite power. The Ice Kite also includes a helipad, beach area with waterfall, and toy-carrying tender.

Oceanco, in collaboration with naval architects Lateral, has adopted a sustainable design approach for its 357-ft Bravo Eugenia superyacht. The vessel rethinks traditional superyacht design, boasting eco-conscious principles and hybrid propulsion.

The DutchCraft DC25 yacht tender is designed to do a bit of everything the modern day captain and sportsman might need. Deck-mounted rails transform the electric boat from a pleasure craft, to a superyacht tender, to a toy carrier and more.

Back in 2017, a former racing catamaran was turned into a floating clean energy laboratory. Powered by a mix of renewable energies, the striking vessel is now the first recipient of Toyota's new fuel cell system for maritime applications.

When a team of engineers discovered a 1988 prototype of a jet fighter-styled hydrofoil out the back of a warehouse, they thought the same thing you and I would, and they couldn't resist fixing it up, putting a new motor in and taking it for a blast.

In the exaggerated world of superyachts, it can be difficult to make a statement. So instead of penning a yacht to be lost early in a sea of 2020 launches, shipyard Codecasa smashes together the nautical and the aeronautical to create the Jet 2020.

Hydrofoiling devices are starting to become more common as electric propulsion systems continue to develop. This one's a board you can stand on and accelerate up and out of the water to cruise at a low-drag 28 mph (45 km/h) for up to 80 minutes.

Sweden's Awake Boards launched its 35 mph Rävik premium electric surfboard in 2018, and has now announced the second generation ride at Boot Düsseldorf last week – the Rävik S.

While underwater remotely-operated vehicles (ROVs) certainly are useful, manually controlling the things via a console can be quite a painstaking task. That's why researchers have now enabled one to autonomously gather samples from the ocean floor.

While autonomous underwater vehicles (AUVs) do make the gathering of oceanographic data easier, launching the things can still be a hassle. That's why scientists have developed a new system that uses an unmanned surface vessel to deploy an AUV.

Back in 2017, Chinese startup Sublue successfully crowdfunded an underwater scooter known as the WhiteShark Mix. The company is now set to release a new-and-improved model, called the Mix Pro.

Japan wants to move towards a clean, hydrogen-based energy economy, but to make that happen, it'll need to import liquid hydrogen from elsewhere. Meet the Suiso Frontier, the world's first liquid hydrogen transporter. It runs on diesel.