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Watt & Sea Hydrogenerator Diagram

Figure: Watt & Sea Hydrogenerator attached to the stern of a sailing vessel.

Good management on-board energy is key to sailing in serenity, regardless the consumption of electronics or other electrical appliances. Watt & Sea’s hydrogenerators offer energy self-sufficiency for cruise or race boats.

Stemming from ocean racing research, the first Watt & Sea hydrogenerator was created in 2008 with the objective to create a product that charged a sail boat's battery system with negligible drag. This hydrogenerator has since then been improved to provide an even more reliable and efficient product. Tested all across the globe, Watt & Sea products are powerful, reliable, and lightweight.

Cruising 300

Up to 300W of hydroelectric energy production!

The Cruising 300 is recommended for boats measuring up to 35 feet. Available in two lengths in order to optimize the immersion of the propeller. Ideal on boats sailing generally from 4 to 6 knots, and consuming 8 Amps~ (in a 12V installation).

  • Outputs 100W from 5 knots
  • Lightweight: 6.3 kg (14 lbs)
  • Two-year warranty
  • Quiet operation
  • Hydrodynamic design
  • Mobile Bluetooth interface

Cruising 600

Up to 600W of hydroelectric energy production!

The Cruising 600 is ideal for sailing boats over 35 feet. Available in two lengths to optimize the immersion of the propeller. Output power of the hydrogenerator increases exponentially when travelling over 6 knots, and operates best within 3 to 20 knots.

  • Outputs 120W from 5 knots
  • Lightweight: 7.4 kg (16 lbs)
  • Two-year warranty
  • Quiet operation
  • Hydrodynamic design
  • Mobile Bluetooth interface

Watt & Sea Propeller Performance Graph

Watt & Sea Hydrogenerator Propeller Performance Graph

Figure: This graph shows how matching the Watt & Sea Propeller to the cruising boats speed can optimize energy production.


Products 1-15 of 15
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4:1 lifting and lowering hoist
Price: $101.00
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Availability: Special Order
Watt&Sea Item #: WGW10058 -

4:1 lifting and lowering hoist This hoist will facilitate handling at sea while lowering or lifting the hydrogenerator. It includes : 6 meters of 6 mm diameter polyester rope spliced to the block1 x 40 mm diameter fiddle/becket/jammer block1 x 40 mm diameter fiddle block2 x spring clips2 meters of 5 mm red polyester rope (lowering)2 meters of 5 mm blue polyester rope (lifting) Reference : PA-04 ...

Hydrogenerator 300W 12V Cruising 24" by Watt and Sea PK-610-300, Hydrogenerator Cruising, Watt & Sea, Cruising 300
Price: $3,921.00
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Availability: Back Order
Watt&Sea Item #: WGW10003 -

Even lighter, more manageable, more hydrodynamic and corrosion resistant.  Result of experience, the new generation of Cruising hydrogenerators and its new features meet the requirements of users, boatbuilders and installers: Available in 2 outputs, 300 or 600 Watts, and 2 lengths, 610mm (24") or 970mm (38") "Brushless" technology and same material on any model Converter 12-24 Vcc auto-detected with an advanced electronic architecture New bracket with its cam positioned closer to the...

Hydrogenerator 300W 12V Cruising 38" by Watt and Sea PK-970-300, Hydrogenerator Cruising, Watt & Sea, Cruising 300
Price: $4,825.00
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Availability: Back Order
Watt&Sea Item #: WGW10005 -

Even lighter, more manageable, more hydrodynamic and corrosion resistant.  Result of experience, the new generation of Cruising hydrogenerators and its new features meet the requirements of users, boatbuilders and installers: Available in 2 outputs, 300 or 600 Watts, and 2 lengths, 610mm (24") or 970mm (38") "Brushless" technology and same material on any model Converter 12-24 Vcc auto-detected with an advanced electronic architecture New bracket with its cam positioned closer to the...

Hydrogenerator 600W 12V Cruising 24" by Watt and Sea PK-610-600, Hydrogenerator Cruising, Watt & Sea, Cruising 600
Price: $6,875.00
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Availability: Back Order
Watt&Sea Item #: WGW10007 -

Even lighter, more manageable, more hydrodynamic and corrosion resistant.  Result of experience, the new generation of Cruising hydrogenerators and its new features meet the requirements of users, boatbuilders and installers: Available in 2 outputs, 300 or 600 Watts, and 2 lengths, 610mm (24") or 970mm (38") "Brushless" technology and same material on any model Converter 12-24 Vcc auto-detected with an advanced electronic architecture New bracket with its cam positioned closer to the...

Hydrogenerator 600W 12V Cruising 38" by Watt and Sea PK-970-600, Hydrogenerator Cruising, Watt & Sea, Cruising 600
Price: $6,389.00
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Availability: Back Order
Watt&Sea Item #: WGW10009 -

Even lighter, more manageable, more hydrodynamic and corrosion resistant.  Result of experience, the new generation of Cruising hydrogenerators and its new features meet the requirements of users, boatbuilders and installers: Available in 2 outputs, 300 or 600 Watts, and 2 lengths, 610mm (24") or 970mm (38") "Brushless" technology and same material on any model Converter 12-24 Vcc auto-detected with an advanced electronic architecture New bracket with its cam positioned closer to the...

Hydrogenerator 24V Cruising 24" by Watt and Sea WS-PK-1HCM-1CV24, Hydrogenerator Cruising, Watt & Sea
Price: Call For Pricing
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Availability: Back Order
Watt&Sea Item #: WGW10025 -

Specifications: It is light weight, built with robust materials,  compact and easy to install. Minimal maintenance is required. Effective at speeds ranging from 3 to 20 knots, its simple assembly is carried out on the transom thanks to a lifting system found on sailboat rudders. Power : 120W at 5 knots (10A - 12V  or  5A -24V) that's an incredanle 240 amp-hrs a day!                       500W at 8 knots (40A -12V ...

Hydrogenerator 24V Cruising 38" by Watt and Sea WS-PK-1HC-1CV24, Hydrogenerator Cruising, Watt & Sea
Sale: Call For Pricing
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Availability: Back Order
Watt&Sea Item #: WGW10024 -

Specifications: It is light weight, built with robust materials,  compact and easy to install. Minimal maintenance is required. Effective at speeds ranging from 3 to 20 knots, its simple assembly is carried out on the transom thanks to a lifting system found on sailboat rudders. Power : 120W at 5 knots (10A - 12V  or  5A -24V) that's an incredanle 240 amp-hrs a day!                       500W at 8 knots (40A -12V ...

Hydrogenerator 12V Racing by Watt and Sea WS-PK-1HR-1CV12, Hydrogenerator racing, Watt & Sea
Price: Call For Pricing
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Availability: Back Order
Watt&Sea Item #: WGW10015 -

The RACING model is the patented and industrialized version of the prototypes developed for the round the world race Vendée Globe 2008. This model is particularly suited to performance and racing yachts. Specifications: Effective on a range of speed from 7 to 25 knots, it is equipped with a variable pitch propeller electronically controlled by an autonomous and miniaturized processor: the drag is minimized and the energy output optimized. A hydraulic pump allows the control of the...

Hydrogenerator 24V Racing by Watt and Sea WS-PK-1HR-1CV24, Hydrogenerator racing, Watt & Sea
Price: $18,885.00
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Availability: Back Order
Watt&Sea Item #: WGW10026 -

The RACING model is the patented and industrialized version of the prototypes developed for the round the world race Vendée Globe 2008. This model is particularly suited to performance and racing yachts. Specifications: Effective on a range of speed from 7 to 25 knots, it is equipped with a variable pitch propeller electronically controlled by an autonomous and miniaturized processor: the drag is minimized and the energy output optimized. A hydraulic pump allows the control of the...

Watt & Sea Adjustable Pitch Propeller 200mm Watt & Sea Adjustable Pitch Propeller 200mm, P-200-04-PVM
Price: $501.00
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Availability: Back Order
Watt&Sea Item #: WGW10054 -

Watt & Sea Adjustable Pitch Propeller 200mm has been designed for high speed sailing boats, equipped with a Cruising hydrogenerator. The blades are the same as the one used with the Racing propeller, the difference is their position which is done manually (unlike the Racing model which use an hydraulic pump for this adjustment). Adjustable Pitch Propeller 200mm Features: 1 composite hub3 High-Tech composite blades (strength validated on the Vendée Globe)3 grub screws for the blades...

Watt & Sea Cruising 3 Blade Propeller 280mm WS-P-CL-001, Hydrogenerator propeller, Watt & Sea, PCL-001
Price: $298.00
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Availability: Back Order
Watt&Sea Item #: WGW10050 -

Watt & Sea larger propeller 11" (280mm) Recommended for low speed cruising sailboats  Manufacturer part number: WS-P-CL-001

Watt & Sea Cruising 3 Blade Propeller 240mm WS-P-C-001, Hydrogenerator propeller, Watt & Sea, PC-001
Price: $327.77
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Availability: Back Order
Watt&Sea Item #: WGW10051 -

Watt & Sea Standard propeller 9.45" (240mm) Recommended for low speed cruising sailboats  Manufacturer part number: WS-P-C-001

Watt & Sea Cruising 3 Blade Propeller 200mm WS-P-CS-001, Hydrogenerator propeller, Watt & Sea, PCS-001
Price: $293.00
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Availability: Back Order
Watt&Sea Item #: WGW10052 -

Watt & Sea Standard propeller 7.87" (200mm) Recommended for low speed cruising sailboats  Manufacturer part number: WS-P-CS-001

Watt and Sea Universal Support Mount Watt and Sea Universal Support Mount
Price: $1,375.00
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Availability: Back Order
Watt&Sea Item #: WGW10056 -

The Watt and Sea Universal Support Mount is the ideal solution for vertical or leaning transoms. It allows to compensate an angle from + and - 45°. The Universal Support Mount is aesthetic, strong and is made of e-polished stainless steel. Check out the short video clip  Manufacturer#: FU-03 More detailed information: Fitting Instructions 2D Drawing ...

Removable Support Kit WS-FA-C-001, Hydrogenerator removable support kit, Watt & Sea, FA-C-001
Price: $552.00
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Availability: Back Order
Watt&Sea Item #: WGW10057 -

This removable support kit enables to move the hydrogenerator easily from one side to the other depending on the sailing tack thus having an optimum production thanks to the permanent immersion of the propeller. This fitting system is also dedicated at the mooring or at the marina to be moved easily and quickly in that case we recommend the using of the IP68 waterproof connection kit ref WS-PL-C-001   More detailed information: Sales Sheet ...