Marine

The green economy desperately needs huge quantities of battery metals, and they're sitting right there on the deep ocean floor. Here's a device designed to harvest them with the minimum possible impact to one of the world's last untouched ecosystems.

The new Navier 30 adds a little length over the concept that preceded it while offering the same robust range and high-tech design. It has an autopilot system meant to evolve into full autonomy and an active foil system to breeze over 4-foot waves.

The Valo Hyperfoil aims to kick off a new class of "ultra-performance" electric personal watercraft, a two-seat jetski that can rise out of choppy water on extendable hydrofoils, and go faster than any other electric or hydrofoiling craft you can buy.

Zagato has become the latest world-famous Italian design house to dunk its incomparable artistry into the sea. The sleek, 26-foot Persico Zagato 100.2 promises to be a fast electric day boat and instant collector's item.

Silent Yachts is best-known for its impressive solarized battery-powered catamaran yachts. Now, realizing that electric yacht buyers would undoubtedly prefer a clean, quiet all-electric tender, the company presents the all-new Silenter Tender 400.

It was just last year that we told you about the Super Sub, a speedy three-person electric submersible made by Dutch company U-Boat Worx. Well, the firm has now announced a revisal to its design, which will make the watercraft even faster.

Touring kayaks are typically made of plastic, composites or sometimes wood, but unlike canoes, almost never aluminum. That didn't faze Brennen Kunka, however, who recently built his own all-aluminum kayak from the ground up – and it's awesome!

Pierpaolo Lazzarini is certainly no stranger to unusual designs, but the Pangeos is his most ambitious to date. Taking the form of a gigantic turtle, it would create a movable "city" that he estimates would be the world's largest floating structure.

Saietta Group is readying its Red Dot-winning Propel S1 electric outboard for production. Designed to help meet future demand for clean, quiet e-boat drives, the compact 104-lb outboard uses a 10-kW pancake motor to propel boats for up to 56 miles.

A watercraft quite unlike others, the Portless Catamaran is a large inflatable that rides to the water in a motor vehicle. It quickly inflates into a dual-deck cruiser and lounge propelled along cleanly and quietly by a small electric outboard.

There are quite a few electric surfboards on the market, and they mostly work in the same way – their jet drive runs for as long as you squeeze a throttle on a handheld remote. The Jetson is different, in that it provides temporary boosts as needed.

When we looked at the Pol Lux earlier this year, it was still in the rendering stages. The unique solar-electric RV catamaran is now being tested and showcased on the water. It promises to be an exciting new way to enjoy the water all day and night.

One of the sleekest, sharpest boats of 2022, the Alte Volare is a new design study from Cockwells. The limousine tender relies on a combination of electric powertrain, retractable hydrofoils and fuselage-like hull for fast, efficient shuttling.

Florida company Poseidon Amphibworks is raising money toward a prototype of its Trident LS-1. This electric, AWD three-wheeler will be capable of highway speeds on land, and it'll extend its range capabilities in the water using low-drag hydrofoils.

What do you get when cross an ebike with a hydrofoil? That would be the Manta5, which we first heard about back in 2017. The 2nd-gen model has now been announced, and it features a new throttle-only mode, along with a much quicker learning curve.