Please select your home edition
Edition
Maritimo S Series

New cruising hydrogenerator produces power at just 2kts of speed

by Tristan Campbell on 23 Apr 2014
Paprec Virbac at speed with a Watt & Sea hydrogenerator on her transom SW
The newest hydrogenerators from Watt & Sea are lighter, have better hydrodynamics, and are more resistant to corrosion. The Cruising 300 and 600 Models are now available in New Zealand from Kiwi Yachting.

Like their predecessors, a propeller on a retractable stern leg sits on the yachts transom, turning water movement into power, with as little as 2 knots boat speed. Any drag is virtually undetectable, making Watt & Sea the ultimate Green energy solution while underway at sea.

Developed in the Vendee Globe Race and popularised by offshore cruising sailors, the world’s most efficient hydrogenerator for yachts has 2 new cruising models that are even further refined. The new Cruising 300 model is 2kg lighter and is designed for smaller yachts running in the 2-10 knot speed range. It is very quiet, and its brushless technology can generate 300W of power with as little as 7 knots boat speed.

For larger yachts, racing, or longer offshore passages, the new Watt & Sea Cruising 600 can create a hefty nominal output of 600W in 9 knots BSP. At this kind of power output, many vessels may require little other generation than an emergency back-up.

The Racing model has also been optimized for use with boat speeds of up to 30 knots. It is lighter again and has higher nominal power output. The Watt & Sea Racing hydrogenerator comes in Aluminum and Carbone options.

A more advanced convertor automatically adapts to either 12 or 24 Volt systems, and all models are available in long or short shaft for twin-rudder monohulls, catamarans, or almost any sailing application. Furthermore, both the Cruising 300 and 600 are now more affordable, with packages starting off at $4916.00.

More information can be obtained from Kiwi Yachting or at Safety At Sea. Watt & Sea is available through boat builders and marine retailers nationwide.


Maritimo M75Sydney International On-Water Boat Show 2025Hyde Sails One Design Sale 2025

Related Articles

High stakes and High Seas
18 IMOCA boats battle at the start of the Transat Café l'OR The final IMOCA race of the 2025 season gets under way from Le Havre for Martinique in the Caribbean on Sunday, and it looks set to be a thriller featuring some of the top boats and sailors in the Class ready to push hard for victory.
Posted today at 3:17 pm
Coastal Classic: Lucky gets a break
Lucky, the lead boat in the Coastal Classic found the forecast breeze after 14 hours of sailing. After 14 hours of sailing the US registered 88fter, Lucky, rounded Cape Brett at the entrance to the Bay of Islands - and was headed for the finish sailing at 10kts. The rest of the fleet were latching onto the building breeze.
Posted today at 1:14 pm
2025 Bermuda Gold Cup Day 3
Egnot-Johnson surges, Östling shines Defending champion Johnie Berntsson, from Sweden, is the first skipper to book his spot in the semi-finals of the 2025 Bermuda Gold Cup, finishing unbeaten for the second day running.
Posted today at 7:41 am
Elite fleet for Rolex Sydney Hobart Yacht Race
A massive fleet of 142 yachts have entered the iconic Australian race Entries have closed for the 80th running of the 'Great Race South', the Rolex Sydney Hobart Yacht Race, with an elite fleet set to face the starter's cannon on Boxing Day.
Posted today at 6:47 am
Watching the growing sailing scene in China
A fun weekend at the 2025 Lake Fuxian Regatta I've become fascinated with the growing sailing scene in China. I had so many preconceptions ahead of my first visit to the country in 2024, which were blown out of the water on that trip, and this was reaffirmed at the Lake Fuxian Regatta.
Posted today at 6:30 am
Port Jackson Championship Handicap Race
A special win for Amy Mulkearns and her team If we ever needed reminding mums are super-human, Amy Mulkearns delivered living proof with a special win in last Saturday's Port Jackson Championships.
Posted today at 6:18 am
Wild Oats XI reborn as Palm Beach XI
Palm Beach Motor Yachts Takes the Helm of the Iconic Yacht It's a great honour to announce that Palm Beach Motor Yachts has taken ownership of the legendary ocean-racing yacht Wild Oats XI, to be reborn as Palm Beach XI.
Posted today at 5:41 am
2025 Wingfoil Racing Youth & Masters Worlds day 2
AP displayed. Dolphins on the course! Even the ever-calm race officer, Michal Jodlowski, couldn't keep the crackle of excitement out of his voice as he announced a short postponement to racing over the radio this afternoon.
Posted on 23 Oct
Transat Café L'or Ocean 50 preview
The racing karts of the oceans There will be ten Ocean 50s at the start of the TRANSAT CAFÉ L'OR Normandie Le Havre this Sunday. The light, fast flying catamarans require the pairs of co-skippers to really live life much closer to the edge on their race from Le Havre to Martinique.
Posted on 23 Oct
Top Picks: High-Rated UV50+ Rashies
Kite boarders, sailors, paddlers and surfers all agree Vaikobi's Rashies offer a 5-star performance! Kite boarders, sailors, paddlers and surfers all agree... Vaikobi's UPF50+ Rashies offer a 5-star performance!
Posted on 23 Oct