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Bigger Is Better

Sealegs System 100 provides amphibious advantages for large-format leisure and work boats.

Designed to allow experienced boat builders and designers to incorporate the Sealegs system into their boat.

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The Sealegs SLG-100 system is designed specifically for ease of integration onto existing 30ft - 43 ft (9m - 12m) proven hull forms, with minimal design modifications.

The addition of the SLG-100 amphibious capability is an operational game-changer. It is built tough for the mission in solid 6061 T6 alloy and 316/2205 Stainless Steel with proprietary Sea-Kote TM marine protection system.

The SLG-100 amphibious enablement system will deliver the performance and reliability required in extreme environments.



System 100 ultilises all the experience and knowledge from 15 years of amphibious engineering and provides the benefits of this to large boats in the recreational, commercial and military markets.

Proven in demanding, high duty cycle commercial environments, the system provides advantages beyond traditional marine solutions including;

      • No required investment in coastline infrastructure
      • Versatility in routes and serviced locations
      • Dry and Safe
      • Reduced environmental impact when compared with building infrastructure
      • Innovative and forward thinking solution

All wheel drive

All Sealegs come standard with All Wheel Drive (AWD). Both the front wheel and rear wheels have their own wheel motor. This allows for maximum traction and terrain capability when encountering beach inclines of soft sand, shell, shingle and/or pebbles. 

AWD greatly increase the maneuverability of a Sealegs, but if further traction is required, reducing the pressure in tires can further increase traction in difficult terrain. Finally, diff-lock is available as an option to augment the functionality of AWD. 

The diff-lock option allows operators to force all wheels to turn in unison, regardless of traction (or lack thereof) available to all wheels. This, combined with AWD, will allow a Sealegs to overcome more extreme conditions.


Automatic Braking System

The Automatic Braking System (ABS) is an exceptional safety feature that comes standard on all Sealegs. ABS is a land-based mechanical brake within the rear drive motors which automatically activates when: the craft is parked and the inboard motor is turned off OR in the unlikely event of a hydraulic transmission failure OR if the operator activates the emergency stop button on the console.*

To support these enhanced safety features, the leg assemblies have been redesigned for greater strength and fitted with specifically designed hubs and bearings. In the interests of safety, we have engineered the system so that it can be retrofitted to most of the existing Sealegs customer fleet, so if you own a Sealegs without ABS and would like this system fitted, please feel free to contact us.

Enhanced Power Steering (EPS)

Enhanced Power Steering, or EPS, is Sealegs new proprietary steering system. EPS uses smart PLC and magnetic sensor technology to provide a smooth, seamless amphibious experience.

While operating a Sealegs with EPS on water the bow wheel remains central, but when the craft switches to land operation wheel steering locks in. During the transition, EPS ensures wheel alignment is central. This ensures perfect steering alignment on demand and ideal function during transition – all automatically.

In the unlikely event of a malfunction, EPS includes an emergency steering system, ensuring operation can be completed for repair. EPS represents the next step in amphibious boat operation and embodies the spirit of a Sealegs– less hassle, more fun. EPS is standard on all 9m crafts and will be made available as an option on other crafts.

*Only available on specific models

Sealegs System 100 specifications

MAX gross weight
7500kg (16,000 lbs)
MAX donor vessel length
12m (39')
Air or radiator (Aqua Air)
950 mm x 500 mm tyres on 17" rims
Top speed
12 kph (AWD) 7 mph
System weight
1200kg (2645 lbs)
Kubota 97hp (diesel)
MAX torque
10,500 Nm (7,744 ft lbs of peak torque at 250 bar (3650 PSI)
Permanent All-wheel drive
via hydraulic 2-speed wheel motors
Climbing capability
15 degree
Control system
Power Supply
Autonomous 50kW or power take off existing in-board
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