Choosing a Tiller Autopilot: What to Check

What a tiller autopilot is

A tiller autopilot is an electric linear actuator designed for sailboats with tiller steering. It mounts between the tiller and a fixed point on the cockpit, such as a seat or coaming, and extends or retracts to move the tiller. This is different from a wheel pilot, which turns a wheel, or a below-deck drive, which connects to the rudder stock.

Most tiller autopilots are self-contained: the drive, the heading sensor, and the control keys are built into one unit. That makes them easy to remove when not in use and simple to understand in a listing. For a broad selection, see our best tiller pilots guide.

How a tiller pilot mounts

The mounting is part of what makes a tiller pilot easy to live with. In general terms, the unit attaches to the tiller with a clamp or bracket, and the other end attaches to a fixed point in the cockpit. The manufacturer supplies a mounting bracket or clamp, and many listings also mention a pushrod or extension arm as an accessory.

Because the unit is removable, you can store it below deck or take it home when the boat is not in use. This is a convenience, but it also means you should check that the mounting point on the boat is within reach of the unit's pushrod. The maker's manual and the listing dimensions decide this; there is no one-size-fits-all rule.

The Raymarine drive units page describes a "Cockpit Tiller Drive" as an electric drive unit for tiller-steered sailing boats up to 6,000 kg (13,000 lbs.) displacement. That is a stated fit range. When a listing does not give a displacement figure, the maker's page is the place to find it.

If you are comparing tiller pilots with other sailboat autopilot types, the sailboat autopilot guide explains the alternatives.

Reading a tiller autopilot listing

The first words in a tiller autopilot listing usually tell you the model line, for example "Raymarine ST1000+ Tiller Pilot" or "Raymarine EV-100 Tiller Autopilot Pack." The model line is the key to understanding what the unit is designed for. The part number that follows, such as a specific SKU, is what the seller uses to order it, but it does not tell you the capabilities.

Check the bullet list for what is included. A complete tiller pilot pack may come with the drive, a control head, a sensor, and cables. A core pack, if the site offers it, omits the control head or the sensor so you can keep gear you already have. The phrase "w/o control head" or "no drive" tells you a part is left out.

If the listing says "no drive" or "requires pump," that unit is not a tiller pilot but a hydraulic or linear system. Tiller pilots always include the drive because it is the arm itself. A missing detail, such as the control head not being listed, is not a mistake; it tells you the pack is a core pack.

This site lists only complete autopilots and packs, never bare drives or spare parts. That keeps the comparison between listings fair, because you are comparing systems, not components. See our complete autopilot packs and core packs guides for how those listings differ.

Compatibility: tiller, boat, and force

The boat's tiller determines whether a tiller pilot can fit. The unit needs enough travel to move the tiller from one side to the other, and the pushrod must reach both the tiller and the mounting point. A tiller that is too short or too long may not work with a given unit's stroke.

The force the pilot can apply is also tied to boat size and displacement. The maker's stated displacement range is the best guide. Raymarine's cockpit tiller drive is rated for boats up to 6,000 kg (13,000 lbs.) displacement, from its drive units page. If your boat is heavier than that, a tiller pilot is not the right choice.

The listing may name a model number like ST1000+ or ST2000+. These are not specifications by themselves; they are product names. The maker's page for each model states what boat size and tiller features it suits. Read that page before you buy, not a retailer's claim.

For a small sailboat, a tiller pilot is usually a good fit. For a larger cruising sailboat with a heavy helm, a below-deck linear drive or a hydraulic system is more appropriate. The choice is about the boat's steering, not about the brand.

Self-contained vs system pack

Self-contained tiller pilots, such as the Raymarine ST1000+ and ST2000+, have the keypad and sensor built in. You do not need a separate control head or heading sensor. This is the simplest way to add autopilot to a small boat, and it is also the most affordable tier in the market.

System packs, like the Raymarine EV-100 Tiller Autopilot, separate the drive from the control head and the sensor. The EV-100 uses an Evolution actuator control unit and a magnetic heading sensor, and it connects to a chartplotter or a dedicated control head over a network. This gives you more flexibility, integration with other instruments, and a display you can mount at the helm.

When you read a listing, "pack" generally means a system with multiple parts. A "tiller pilot" alone usually means a self-contained unit. The difference matters: a self-contained unit is cheaper and simpler, but a system pack can feed heading data to a chartplotter and accept remote commands.

If you already have a compatible control head or sensor, a core pack that leaves those out can save money. The list of what is included is always in the listing or on the maker's page. For a broader view of marine autopilots, our best marine autopilot guide covers all types.

Questions before you buy

Before choosing a tiller autopilot, ask the seller or consult the maker's page for these points:

What is the maximum displacement and tiller length stated?

Is the control head included, or do you need to buy it separately?

Does the pack include the mounting bracket and pushrod?

Does the unit connect to your existing chartplotter or NMEA 2000 network? The NMEA 2000 standard is a common way for marine electronics to share data.

Is the sensor built in, or does the pack require an external compass?

What does the maker's manual say about installation? A tiller pilot is usually easy to fit, but for a system pack, a qualified installer is generally recommended.

No listing can tell you how the unit will feel on your boat. The maker's stated range is the best information available, and the manual is the authority for fit and installation.

What to pick for your situation

Questions

What is a tiller autopilot?

A tiller autopilot is a self-contained electric actuator that mounts between the tiller and a fixed point in the cockpit. It moves the tiller to steer a sailboat. It is designed for small boats with tiller steering, not for wheel steering.

How do I know if a tiller autopilot fits my boat?

Check the maker's stated displacement range and tiller length. Raymarine, for example, rates its cockpit tiller drive for boats up to 6,000 kg (13,000 lbs.) displacement. The listing and maker's page give the stated range; the manual provides exact mounting measurements.

What does a tiller pilot pack include?

A complete tiller pilot pack typically includes the drive arm, the control unit (keypad), the heading sensor, and cables. A core pack may leave out the control head or sensor. The listing will say what is included.

Can I use a tiller autopilot on a powerboat?

Tiller pilots are meant for sailboats with a tiller. Powerboats use hydraulic or linear drives matched to their steering system. A tiller pilot would not mount to a powerboat helm.

Do I need a separate control head for a tiller pilot?

Self-contained tiller pilots have a built-in keypad. System packs like the EV-100 Tiller use a separate control head, which you can mount at the helm or integrate with a chartplotter.

Is installation a do-it-yourself job?

A tiller pilot is often easier to mount than a below-deck system, but still requires correct placement. For a system pack, a qualified installer is generally recommended. The maker's manual is the guide for any installation.

Does a tiller autopilot replace a lookout?

No. The U.S. Coast Guard Boating Safety Division emphasizes that boaters must keep a proper lookout at all times. An autopilot handles steering, but you remain responsible for navigation and collision avoidance.