Preventing Off-Season
Boat Theft

By Elaine Dickinson

So you think your boat is all buttoned up for the winter, tucked safely away in your backyard or driveway? Think again.

Boat owners are a trusting lot and while one would not think of leaving the house with all the doors and windows open, boats are often left wide open and unsecured, equipped with all sorts of small and valuable accessories that can easily end up on eBay.

Boats are also so easily transportable, they're particularly susceptible to theft. Each year, insurance claims for theft losses cost the industry and consumers millions. While some boat thefts are the work of sophisticated rings that target a specific type of boat, others are isolated crimes of opportunity by petty thieves taking small, but valuable, equipment.

Photo of the parts for a boat trailer

Here are some tips to help stem the tide of boat thefts. Not all will apply in every situation or for every boat type, but any obstacle a burglar faces trying to steal your boat or break into it could stave off a painful loss.

On the Boat:

  • Engrave all valuables including electronic equipment, outboard engines, radios, loose gear, etc. with the owner's name, home port, state driver's license or identification number, and the boat's hull identification number.
  • Install dead bolt locks on all doors and secure ports and windows with inside auxiliary locks.
  • Attach inverted, strong hasps and padlocks to all hatches and secure lockers with non-removable hasps and hinges and lock with strong padlocks.
  • Remove all portable valuables from your vessel, thereby eliminating possible targets of the thief. Don't leave radios, binoculars, cameras or laptops on board.
  • Maintain an inventory list ashore that includes all boat gear with the name, model, serial number, manufacturer, and description of each item. Digital images or photos of your gear could also go into this file.
  • Never leave keys aboard a boat, even in a "hidden place." Any seasoned burglar knows all the spots to look.
  • Don't leave ownership papers on board the boat.

At the Marina:

  • Locked gates and other barriers to both pedestrian and vehicle traffic should be installed at every dock entrance.
  • Signs that clearly state marina regulations and access limits should be posted.
  • Access to boats should be limited only to owners and other authorized persons.
  • Good lighting should be focused on access points and boat docks; security cameras are even better.
  • Boat owners should get acquainted with their dockside neighbors and report suspicious "visitors" and activities.
  • Consider developing a "Marina Watch" patterned after "Neighborhood Watch."

On a Trailer:

  • Remove the tires. As an added precaution against theft, be sure to remove the hub nuts and store them with the tires.
  • Out of sight is less tempting. If the boat has to stay in the driveway, don't park it facing the street. Thieves may carry coupler devices that can be quickly attached to your trailer.
  • Outboards should be taken off and stored in the garage. Ditto seats, battery, dodgers and canvas; they'll hold up better when stored indoors as well.
  • Lock your wheels to the trailer. A length of heavy chain, or cable, run through each wheel and around the axle or trailer frame is a great deterrent to theft of the trailer or your wheels. Also, lock your spare tire.
  • Remove the trailer's license plate and, if possible, the tail lights. If practical, chain the trailer to a tree.

Long-term Storage:

  • Always tie up a boat to something secure with a chain or cable that cannot be lifted over or torn loose from the piling or mooring. Run the chain or cable around a thwart or stanchion.
  • Use one-way bolts, lock nuts, and backup plates on eye bolts.
  • Consider leaving a boat's engine out of commission when unattended — remove a spark plug, propeller, or the rotor, drain the fuel, or install a hidden cut-off switch.
  • Secure outboard motors with special transom bolts or clamping screw locks.

If you're shopping for a boat, be cautious of super "deals" — someone could be trying to sell you a stolen boat. There are a few red flags that should warn you of a potential scam. If the asking price is unusually low for that make and model of boat or the seller is in a rush to sell it to you, watch out; "too good to be true" usually is. Reference Internet boat listing sites such as to get an idea of the normal range of used boat prices for that model.

Buyers should make sure the boat has a valid Hull Identification Number (HIN) and that the one on the boat matches exactly to the HIN on any paperwork such as title and registration.

The boat's registration numbers should not appear altered, either on paper or on the hull, and both should match. If the seller says discrepancies in identification are because the boat was sunk, burned or rebuilt, be wary. If the seller has only photocopied versions of ownership documents, or title and registration are from out of state, watch out. Likewise, if the seller has no title or other proof of ownership, walk away from the "deal."End of story marker

This article was originally published as "Foiling Off-Season Theft" in the January 2007 issue of BoatUS Magazine.


 Recommended Articles
Gray rule

Thumbnail photo of theft of trailerable boatFrom Locks to Lockdown

The simplest precaution is also one of the most effective using
a lock and key

Thumbnail photo of a combination lockKeep Your Boat Under Lock And Key

More than 50 percent of all boats stolen are on trailers. Use these tips to make sure yours isn't an easy "get"

Thumbnail photo of a missing posterMarine Investigators On The Case

Missing or stolen boats can end up in some unlikely places


BoatUS Magazine Is A Benefit Of BoatUS Membership

Membership Also Provides:

  • Subscription to the print version of BoatUS Magazine
  • 4% back on purchases from West Marine stores or online at
  • Discounts on fuel, transient slips, repairs and more at over 1,000 businesses
  • Deals on cruises, charters, car rentals, hotel stays and much more ...
  • All For Only $24 A Year!

Join Today!