The world's first all-electric water ski tow boat is up and running, offering demo days from the shores of Lake Tahoe in California. The Super Air Nautique GS22E offers watersports fans a handsome, quiet, emissions-free fun machine ... at a price.

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Though some folks chase storms for thrills or curiosity, there are also those who do so for scientific purposes. And it's the lattermost pursuit that will see a small fleet of unmanned surface vehicles deliberately head into hurricane territory.

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Switch Maritime says its Sea Change ferry is nearly built and ready to work in the San Francisco Bay in Q3 this year. Powered by compressed hydrogen gas running through a fuel cell, it'll be the first of its kind, running for two days on a tank.

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After first appearing on our radar in late 2017, the Manta5 XE-1 Hydrofoiler has now entered production. The company has a range of water hydrofoil bikes planned, including racing versions, electric-only motorcycles for the water, and a surfing model.

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Swedish boat company X Shore makes its move across the Atlantic, launching its all-electric Eelex 8000 in the US. The modular, connected boat brings a versatile layout and intelligent software suite with over-the-air updates.

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Renowned Italian yacht design firm Lazzarini has unveiled designs for a solar-powered amphibious “crabmaran” and according to the studio it will be the first in the world. Dubbed Pagurus, the striking superyacht is a 82 ft (25 meter) solar-powered amphibious catamaran, which merges solar technology with innovative design.

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If a boat full of people is zipping across the water, it's possible that one of them could fall overboard without anyone noticing ... at least, not right away. The 1st Mate Marine Safety and Security system is designed to keep that from happening.

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Triton has turned its attention back to the luxury sector with a new six-person sub designed to launch from the garage of your mega-yacht. Its giant 2.5-m diameter spherical acrylic pressure hull is the biggest ever, giving panoramic views for six.

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A Stanford team has demonstrated a unique system that can generate a strong sonar wave, and read and interpret the reflected signals, from an airborne platform. This raises the possibility of sonar-enabled drones that could finally map the sea floor.

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Two heavyweights in high-performance battery tech are teaming to create the world's first lithium-sulfur battery-powered luxury boat. Williams Advanced Engineering and Oxis Energy will collaborate to get the cutting edge, 400-kWh e-boat out on the water.

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