There's a performance variable that most boaters know exists but few can precisely control: the position of the outboard engine relative to the transom and the waterline.
Set it wrong and you're leaving speed, fuel efficiency, and handling on the table — every time you leave the dock. Set it right, and the difference is immediate: cleaner holeshot, higher top-end, better fuel economy, and a boat that responds the way it was designed to.
The Dometic SeaStar Jack Plate (opens in new tab) was engineered to put that variable entirely under your control.
Designed in Vancouver. Built for the World.
The Dometic SeaStar Jack Plate was designed by Dometic's marine engineering team in Vancouver — the same group responsible for some of the most trusted hydraulic and electronic steering systems in the marine industry.
Their brief was straightforward: build a jack plate that delivers precise, repeatable outboard positioning with the reliability and build quality that professional boaters and serious recreational users demand. The result is a product that covers outboards from 60 to 600 horsepower — a range that encompasses everything from serious bass boats to high-performance offshore platforms.
What a Jack Plate Actually Does — and Why It Matters
A jack plate mounts between the transom and the outboard motor, allowing the engine to be raised, lowered, and set back horizontally from the hull. This adjustability affects three critical performance variables simultaneously: how cleanly the propeller draws water, the leverage angle at which thrust is applied, and the degree to which the hull is lifted and stabilised at speed.
The SeaStar Jack Plate addresses all three — giving the operator direct control over outboard height and setback from the helm, in real time, while underway.
The practical applications are significant:
Holeshot performance. Lowering the engine increases torque and thrust at launch, getting the hull onto the plane faster and reducing the bow-rise that limits forward visibility during acceleration.
Top-end speed. Raising the engine at speed reduces hydrodynamic drag on the lower unit, allowing the hull to run cleaner and faster at the same throttle setting.
Fuel efficiency. Running the engine at the optimal height for a given speed and load reduces resistance and improves propeller efficiency — a meaningful consideration across a full day on the water.
Shallow water access. Raising the engine allows navigation in water depths that would otherwise require reducing speed significantly or avoiding the area entirely.
Storage and protection. At the end of the day, the engine can be lifted completely clear of the waterline — reducing marine growth, corrosion exposure, and the wear that comes with permanent submersion.
The Engineering: What Makes the Dometic SeaStar Jack Plate Different
Box-in-Box Design with Integrated Hydraulic Actuator
The SeaStar Jack Plate uses a self-contained box-in-box construction — the hydraulic actuator is fully integrated within the outer enclosure rather than externally mounted. This design eliminates exposed hydraulic components, simplifies the installation footprint, and ensures the actuator delivers consistent lift performance even under full power load — the operating condition where conventional jackplates are most prone to inconsistency.
The result is a full 5.6-inch lift range completed in under 9 seconds — rapid enough to make real-time adjustments while underway, and consistent enough to replicate precisely across thousands of cycles.
Patented Guide Rod Design
Most jack plates transfer load unevenly as the engine moves through its range of travel, creating stress concentrations in the transom mounting and introducing flex that reduces precision. The SeaStar's patented guide rod design eliminates this by maintaining consistent transom load distribution throughout the full range of movement — protecting the transom, improving positional accuracy, and extending the service life of both the jack plate and the mounting structure.
Composite Bushings
Metal-on-metal contact in marine applications is a long-term reliability problem — it generates noise, accelerates wear, and eventually introduces play into what should be a precision mechanism. The SeaStar uses composite bushings throughout, delivering silent, friction-free operation from first use to last. No squeaking, no grinding, no incremental loss of positional precision over time.
Marine-Grade Construction Throughout
Every component in the SeaStar Jack Plate is precision-machined and corrosion-resistant, with marine-grade material specifications selected for long-term performance in saltwater environments. The anodised aluminium construction provides the structural strength required for high-horsepower applications while keeping weight to a minimum.
Optional: SmartStick Sensor
For operators who want complete data visibility from the helm, the optional SmartStick sensor adds a new dimension to jack plate control.
Once installed, the SmartStick provides real-time position feedback accurate to the millimetre — displayed at the helm so the operator always knows exactly where the engine is positioned. This makes it possible to dial in the precise settings that produce the best performance for a given vessel, load, and conditions — and then replicate those settings reliably every time.
For tournament anglers, professional operators, and serious performance boaters, the SmartStick transforms the jackplate from a mechanical control into a precision data instrument.
Setback Options: 4 to 12 Inches
The SeaStar Jack Plate is available in 4 to 12-inch setback configurations, allowing the product to be matched precisely to the transom geometry and performance requirements of each vessel. Setback selection affects the leverage angle and water flow characteristics at the propeller — a variable that experienced riggers and boat builders factor into every high-performance rigging specification.
Dometic's dealer and installer network can advise on the correct setback for any application.
Part of the Dometic Ride & Handling Ecosystem
The SeaStar Jack Plate sits within Dometic's complete Ride & Handling product family — a range that covers every system that affects how a vessel moves through the water, from hydraulic and electronic steering to trim tabs, gyro-stabilisation, and jack plates.
For boat builders, riggers, and dealers, this means the SeaStar Jack Plate can be specified and installed as part of a fully integrated Dometic Ride & Handling package — with consistent engineering standards, compatible control interfaces, and a single point of contact for support across the entire system.
Explore the full Dometic Ride & Handling Range here (opens in new tab).
Find your nearest Dometic marine dealer here (opens in new tab).
The Bottom Line
Outboard positioning has always been a performance variable. The SeaStar Jack Plate makes it a performance advantage — one that's adjustable in real time, repeatable to the millimetre, and built to last across years of demanding marine use.
More control. More confidence. More speed.