Larger boats often benefit from the installation of trim tabs to ensure more stable handling and proper boat positioning. In our workshop, we have installed various trim tab systems, both automated and manual. Trim tabs are mounted on the transom on both sides, with their dimensions depending on the size of the boat. When in use, adjusting the trim tab downward on one side causes the corresponding side of the boat to rise. As a result, trim tabs help reduce the boat's lateral tilt caused by wind, waves, or shifting loads on board. Additionally, trim tabs assist the boat in planing more easily—rising onto the water's surface—which increases speed and reduces fuel consumption.
Trim tabs have been in use for a long time. They can also be found on older motorboats and pleasure craft. Typically, these systems utilize hydraulic cylinders with hydraulic drives to move the tabs up and down. However, these are structurally more complex, have many components, and tend to fail over time.
Modern trim systems more commonly use electromechanical actuators, where the motor is integrated into the cylinder and does not require a separate hydraulic pump. This saves space on the boat and reduces the number of components that could malfunction. Additionally, traditional trim tabs may be replaced with fully electric interceptors (such as Zipwake systems), which are more compact in size.
Trim tabs can be controlled either manually or automatically. With manual control, the operator adjusts the position of each tab using buttons or a joystick, requiring constant corrections based on their perception during the ride. In systems with automation, this task is handled by a control panel equipped with a gyrocompass. It continuously monitors the boat's position and tilt and adjusts the trim tabs accordingly. Automation can also be added to existing trim tabs, as it is relatively easy to install.
It’s important to note that trim systems only work when the vessel is in motion. On a stationary boat, trim tabs provide no effect.
The size of the trim tabs depends on the length of the boat. Material options typically include stainless steel or aluminum. Proper installation is critical, including correct positioning relative to the hull and height on the transom. Incorrect installation can do more harm than good.
As a general guideline, a manual trim tab system with installation costs between €1,000 and €1,500, while systems with automation start from €1,700 to €2,000.
If you’re interested in installing, replacing, or upgrading your trim tabs with automation, contact us at +372 5029783, email us at teenindus@kalaretk.ee, or leave a message via our website.