Marine

Slicing huge cruise ships in half, then welding in an extra segment to lengthen them, is more or less a license to print money for cruise operators – so this 'jumboization' surgery is becoming very common. Let's take a look at how it's done.

Ireland's Safehaven Marine builds search and rescue craft, patrol boats and pilot boats designed to operate in "all weather" – up to and including Force 10 storms with waves up to 23 ft (7 m) high. The firm backs this up with some spectacular testing.

We've been following the progress of the ambitious Neom project since its announcement in 2017, which includes a 105-mile-long, 660-ft-wide and 1,600-ft-tall megacity called The Line. Now we know how some of its tourists and residents will get around.

A remarkable semi-submersible ecotourism concept that takes passengers above and below the water has just received a zero-emission boost thanks to a new partnership between Platypus Craft and electric outboard manufacturer Evoy.

Born from the high-powered world of electric jetboarding, ZeroJet is now channeling all its energy into building performance electric boat drives. Its very first outboard combines drop-and-drive convenience with a superior power-to-weight ratio.

Unpredictable monster waves at sea can severely damage ships and offshore platforms, putting the lives of those who work on them at risk. A new system out of the University of Maryland uses a neural network to provide valuable early-warning alerts.

The first expedition to the Titanic since last year's Titan submersible disaster that killed five people is on its way. The goal is to make the most detailed imaging survey yet of the historic wreck to ascertain how the sea environment is affecting it.

iYacht has been commissioned to help German TV and movie actor Daniel Roesner realize his vision for a "sustainable catamaran designed with circularity in mind." The 55-ft multihull will be built using scrap metal, reclaimed wood and recycled cork.

There are times when you wanna go paddleboarding, and times when you wanna go boating. The Supraman allows you to do either, as it's a modular kit that combines both types of watercraft.

If airplane wings have moveable control surfaces, why don't the wings of hydrofoiling boards? Well, the XFoil 2 does, resulting in what is said to be a much smoother and stabler ride than anything offered by its "old school" competitors.

Switch Maritime has revealed that the US Coast Guard has given the green light for the first hydrogen passenger ferry in the US to enter commercial service. The Sea Change is expected to start full operations later this year.

That's without any modification to the ships themselves, too. The ambitious 'Blue Visby Solution' proposes enormous fuel and emissions savings for cargo ships worldwide, simply by being smarter about speed and timing and eliminating inefficiencies.

Torqeedo, a major innovator of all-electric boat motors, is trying to further improve its clean track record. It's deep in the works on a new version of its iconic bright-orange propeller that's crafted from 100% recycled plastic.

Puerto Rico's Lift Foils likens its new Blowfish add-on accessory to a set of inflatable training wheels for eFoil beginners, making launches easier as well as providing a more versatile platform for seasoned flyers.

French company Seabike has developed a swimming device that uses your own leg power to accelerate you through the water at superhuman speeds. This crank-driven pusher prop looks a bit like an underwater unicycle... We'd love to take one for a spin!