How trim tabs work

How it Works

Most interceptors move.

Hydrotab reacts.

At the core of every Hydrotab system lies something fundamentally different:

Linear Pressure Drive

• No electric screw actuators • No rotational conversion • No torque build-up

The Operating Principle of Hydrotab

At only 2.5 bar, pressure enters a sealed tubular chamber and acts directly on a moving internal surface. The blade deploys instantly — because nothing needs to “spin” first.

No friction from threaded shafts.
No mechanical hesitation.
No energy lost in transmission.

Pressure becomes movement.
Immediately.

The Operating Principle of Hydrotab

The motion of the interceptor is achieved through a high resistance bladder which is expanded pneumatically. This simple idea allows us to have a very simple and open to the sea water mechanism without any sealing that in the same time creates very high shifting forces (up to 2000Kg).

Screw-driven systems must:

Linear Pressure Drive:

Screw-driven systems must:

Hydrotab's Linear pressure drive applies force directly, which means:

The difference is mechanical,

and you feel it at the helm

Simplicity - Efficiency - Robustness

Hydrotab vs trim Tabs

Find out why Hydrotab’s Interceptors are far superior to conventional Trim Tabs

Now add Speed

The SR Series completes full stroke in up to 0.4 seconds.

Not theoretical speed. Not unloaded speed.

Real movement, under real pressure.

At planing acceleration. At high-speed trim correction, In aggressive sea conditions.

Before instability grows — Hydrotab has already corrected it.

That is control.

Installation

The principal of simplicity is obvious in every aspect of the product. We are proud of having succeeded in our goal of constructing the most robust product with the simplest installation in the market. Click to see the video.