Seakeeper Ride: The Complete Solution to Underway Stabilization

Wish you could turn off the chop? When it comes to ride control systems for boats, there’s a glassy path straight out to the horizon—Seakeeper Ride is how you find it.

Every serious boater knows that all-too-familiar ache in your joints after a long day on the water. Sadly the culprit that has you reaching for the ibuprofen isn’t reeling in a prize-worthy catch, it’s the constant pounding of your hull against the waves that has you half fighting to stay upright—and half scanning to make sure no one looks totally miserable.

As uncomfortable as it is, the plague of underway pitch, not to mention the pesky side-tilting roll, is the boat tax you pay to be out on the water—or at least it used to be. The Seakeeper Ride system eliminates up to 70% of underway pitch, roll, and yaw so the only thing wearing out by the end of the day is the fish.

What are your options for underway stabilization?

Let’s backtrack a little bit: not all boat stabilizers work the same way—or solve the same problem. The differences matter, because the right system will give you greater stability and control, exactly when you need it.

What are trim tabs? Historically, they were the only option available to combat unwanted movement when underway. Traditional trim tabs are transom-mounted plates that adjust the running angle of the hull, tilting slightly with manual adjustments to help the boat sit flatter and run more efficiently. They’re the most common starting point for anyone researching boat stabilization—and they work, up to a point. Their limitation is in their fixed position: once set, they can’t react to individual waves because they’re not designed to. When a wave hits, the tab is still set for where the boat was a moment ago. Comparing Seakeeper Ride vs. trim tabs comes down to one thing: reaction speed. A tab holds a fixed angle that the operator has to change manually if they want to make an adjustment; Seakeeper Ride makes 100 adjustments per second. Compared to an active, responsive ride control system for your boat, trim tabs leave a lot to be desired. 

Seakeeper coined the term Vessel Attitude Control Systems (VACS)—effectively creating our own category of stabilization when we introduced Seakeeper Ride. The concept borrows from the attitude control systems used in air- and spacecraft to manage orientation across multiple axes in real time. Seakeeper Ride brings that logic to the water—using inertial sensing hardware and software to monitor and correct pitch, roll, and yaw (yaw is the left-right rotation of the bow, like fishtailing) while underway, making dozens of adjustments every second. It reads the water and responds faster than any wave can knock you around.

See why other systems don’t come close →

Seakeeper Ride makes 100 adjustments every second to respond to wave motion automatically.

So, what does Seakeeper Ride actually do?

Seakeeper Ride gives you a permission slip to throw your trim tabs in the trash and swap them for a system that continuously monitors your boat’s position in the water and responds to every wave, in every condition, without any input from the driver. No buttons, no adjustments—just a smoother ride from the moment you get up to speed.

How it Works

Seakeeper Ride’s controllers mount to both sides of the transom, below the waterline—out of sight, out of mind, just casually doing their job. Using proprietary inertial sensing hardware and software, the system continuously monitors your boat’s behavior across all three axes—pitch, roll, and yaw—and commands the rotary blades to deploy before the motion reaches you. As the blades create lift at the transom, the correction happens instantaneously. Not after the wave, before you even feel it.

The speed at which this happens is what separates Seakeeper Ride from any other system. The rotary blades deploy at up to 300 mm per second. Wave motions can occur in just milliseconds—Seakeeper Ride is built to match that. That gap is exactly why upgrading trim tabs to a VACS is a fundamentally different outcome, not just an incremental improvement. The entire drivetrain is sealed in a dry, greased environment with no mechanical exposure to saltwater. See what 70% pitch and roll reduction looks like. →

The facts:

• Up to 70% reduction in pitch and roll underway
• 100 adjustments per second
• Rotary blades deploy at up to 300 mm per second
• Trim authority begins at 10 mph; full stabilization benefits around 20–25 mph
• As little as 7–10 amps required (smaller models)
• Controls all three axes: pitch, roll, and yaw
• Drivetrain completely sealed—no mechanical exposure to saltwater

Need to see it to believe it? Watch a smoother ride underway:

Here’s what Seakeeper Ride actually feels like.

Seakeeper Ride is engineered for underway motion: the pounding, pitching, and rolling that makes boating in rough seas exhausting before you get where you’re headed. With Seakeeper Ride, that same run feels like a different boat—you’re holding a drink instead of the rail, having a conversation instead of bracing, and arriving ready to fish instead of recovering from the ride out.

The system begins having trim authority at 10 mph and delivers full stabilization benefits at around 20–25 mph. It controls all three motion axes—pitch, roll, and yaw—in all headings and sea conditions. Seakeeper Ride works in all sea conditions, though operators should always check forecasts and use judgment.

It does not work at rest. This is an important distinction: for stability at anchor, you need the Seakeeper gyro—our original technology.

On speed and efficiency: because Seakeeper Ride’s blades deploy and retract in milliseconds—only as much as is needed and when motion correction is needed—drag is reduced compared to traditional trim tabs that remain deployed. In Seakeeper’s testing, the net effect has, in many cases, been an increase in speed and fuel efficiency. 

See Seakeeper Ride drastically minimize boat roll, even in windy conditions. 

Seakeeper Ride reacts in milliseconds, leaving trim tabs in the dust.

Seakeeper Ride reacts faster than any other transom-mounted system on the market.

Not all trim control is created equal. There are three categories of competing systems, and each has a different limitation:

Manual trim tabs hold a fixed angle set by the operator. They can’t react to individual waves at all — the operator has to adjust them manually.

Active trim systems—like Zipwake, Humphree, and Lenco Pro Control Auto—improve on that by adjusting automatically. But they still hold a position between corrections, meaning they react after motion is felt, not before.

Seakeeper Ride is a different category entirely. Its actuators make 100 independent corrections per second, and its variable gain algorithm predicts motion before it reaches the hull — adjusting for sea state, hull size, and heading automatically, with no tuning or commissioning required.

In head-to-head testing against active trim systems:

When it comes to Zipwake vs. Seakeeper Ride, the gap comes down to speed and control. Seakeeper Ride’s actuators move 20x faster than Zipwake and 3.75x faster than Zipwake Pro. The result isn’t an incremental improvement. It’s a different category entirely.

See the difference in real conditions. 

Testing conducted March 20, 2025. Results represent average pitch and roll elimination across three separate testing days vs. bare hull. See the full comparison →

Available for boats up to 55 feet, from 26-foot center consoles to offshore platforms.

Seakeeper Ride product range

Seakeeper Ride is available for fiberglass and aluminum, stepped or non-stepped monohull vessels up to approximately 55 feet. The system is currently available on more than 175 new boat models and can be retrofitted to existing vessels. Compare Seakeeper ride models.

Electrical requirements: 10 amps for Ride 450–600; 14–16 amps for 750 and larger. NMEA-compatible MFD with ethernet port required.

Explore Seakeeper Ride products | Find a new boat with Ride | Start your refit | Read FAQs

More days on the water, less time at the dock. Is a ride control system worth it?

If you’re asking whether Seakeeper Ride is worth it, the answer is in the numbers and in what changes on the water. Think about the last time rough water changed your plans. You put tons of effort into making the trip comfortable and seamless and the water was so choppy, it left you nauseous and let down. Maybe a new guest you were excited to have aboard spent the ride back staring at the horizon, quietly deciding boats weren’t for them. Or your buddy who finally agreed to come offshore—spent the run white-knuckling the grab rail instead of enjoying it. Stabilization doesn’t just improve comfort—it changes who’s excited to get back on the water, how long you stay out, and how many days a year the boat actually leaves the dock.

The performance numbers are documented, not marketing language: up to 70% pitch and roll reduction underway with Seakeeper Ride.

Don’t just take our word for it. See for yourself. 

Stabilization is increasingly standard on new boats, and buyers recognize and pay more for stabilized boats at resale—meaning the investment follows the boat when it’s time to sell. 

For boaters looking to upgrade trim tabs to something that actually reacts to every wave, Seakeeper Ride is the only complete solution available today.

Your questions about boat stabilizers, answered.

What is a boat stabilizer?

A boat stabilizer reduces unwanted vessel motion—pitch (bow rising and falling), roll (side-to-side rocking), or yaw (the bow swinging left or right, like porpoising)—while underway or at rest. Modern systems range from passive trim tabs for small boats to fully active platforms like Seakeeper Ride, which makes 100 automatic adjustments per second. The most complete solution pairs Seakeeper Ride for underway stabilization with a Seakeeper gyro for roll elimination at rest and underway..

How to boat in rough seas—does stabilization help?

Yes, significantly. Seakeeper Ride eliminates up to 70% of pitch and roll underway—turning runs that would have been miserable, or called off entirely, into manageable trips. The system handles it automatically; the captain just drives.

Is Seakeeper ride worth it? How is it different from trim tabs?

Trim tabs hold a fixed angle—they can’t react to individual waves. Seakeeper Ride vs. trim tabs: Seakeeper Ride creates transom lift but responds 100 times per second, adjusting on every wave before motion is felt. It also controls pitch, roll, and yaw—not just running trim.

What is the difference between Seakeeper and Seakeeper Ride?

With Seakeeper, the gyro eliminates roll at rest and underway—anchored, drifting, fishing, etc. Seakeeper Ride manages pitch, roll, and yaw while underway. Different technologies, different installations, solving different problems—designed to work together. The addition of a Seakeeper enhances the underway performance of Seakeeper Ride by an additional ~40% on average from our tests.

Does Seakeeper Ride work at rest?

No. Seakeeper Ride is for underway motion—trim authority begins at 10 mph, full benefits around 20–25 mph. 

Do boat stabilizers affect speed or fuel efficiency?

Seakeeper Ride’s blades deploy and retract in milliseconds, minimizing drag compared to traditional systems. In testing, the net effect has in many cases been an increase in speed and fuel efficiency due to pitch reduction and decreased hull resistance.

Is there a benefit to having both Seakeeper and Seakeeper Ride?

Now that Seakeeper and Seakeeper Ride are integrated, there’s even more benefit than ever before to having both systems! Together, two systems create one unified intelligent system that actively communicates and adapts its control decisions in real time to deliver unparalleled underway pitch, roll, and yaw stabilization.

The addition of a Seakeeper enhances the underway performance of Seakeeper Ride by an additional ~40% on average from our tests, so we suggest you go for both if you can!

What size boats can use a ride control system?

Seakeeper Ride covers monohull and catamaran vessels up to ~55 feet, starting with the Seakeeper Ride 450 for boats up to 26 feet.

Find the right ride control system for your boat.

Seakeeper Ride is the only Vessel-Attitude Control System™. It eliminates up to 70% of underway pitch and roll providing comfort for everyone on board.

→ Explore Seakeeper Ride: Available for boats up to ~55′ 

→ Schedule a demo: See what ride control feels like before you buy