Old Boat Syndrome

Owning an Older Vessel Requires Extra Attention to its Condition

© Alan Sorum

Oct 16, 2007
Sinking Likely Due to Thru-Hull Fitting Failure, Alan Sorum
Old Boat Syndrome describes hazards found in older boats due the ravages of time combined with routine wear and tear. A little attention to the boat will improve safety.

Transport Canada has suggested a unique twist for boating safety. Like anything that grows old, potential safety problems will develop as a boat ages and they have termed this Old Boat Syndrome. While a boater can easily identify many of these potential problems, owners should consider hiring a marine surveyor to inspect their vessel for potential safety issues. Owners of larger vessels are a little familiar with the services provided by marine surveyors, most insurers require a survey be performed every few years before they will extend coverage to a vessel.

Where Should You Look for Problems?

Fuel Systems - There are several areas that should be scrutinized in the fuel system. Ethanol fuel has caused problems with fuel system components in older boats.

  • Buildup of crud in the fuel tank - water, bad fuel and sediment
  • Cracked and worn rubber vent and fuel filler lines
  • Corroded filter and vent line clamps
  • Cracked or leaky fuel tank seams
  • Broken or blocked ventilation hoses and fittings

Electrical Systems - Electrical wiring and components like switches are subject to corrosion that will worsen with age.

  • Ensure lead-acid storage batteries are strapped down and secure
  • Battery contacts need to be clean and covered to prevent short circuits
  • Beware of wiring problems like frayed wires, corroded switches and improper electrical installations
  • Be sure you’re A/C electrical system and its connection to shore power is in good condition. Stray electrical current can kill

Structural Considerations - Many hull problems will become obvious under close inspection. Damage from routine wear and tear can accumulate as a boat ages. This is an area were a marine surveyor can really assist you.

  • Look at the overall condition of the hull. Are there sections of exposed fiberglass or soft spots in the hull or decks?
  • Inspect thru-hull fittings and clamps. Ensure there are valves installed at each thru-hull fitting and replace clamps regularly
  • Improper blocking, storage and covering can damage the hull and vessel interior. Look for evidence of cracks in the inner hull caused by insufficient blocking or ice damage. Poorly ventilated covers can promote the growth of mold
  • Look for damage caused by high moisture - Leaks or cracks in structural members like stringers or areas of rotting plywood in the hull or transom

Mechanical Systems - To a nonprofessional, a visual inspection of the mechanical system isn't likely to reveal much information about a boat's engine. A mechanical space that doesn't receive adequate attention will be apparent to most of us, and a clue that engine maintenance has not been performed properly. Items like air intakes, steering systems and filters are easy to inspect and maintain.


The copyright of the article Old Boat Syndrome in Boating & Sailing is owned by Alan Sorum. Permission to republish Old Boat Syndrome in print or online must be granted by the author in writing.


Improper Jack Stand Use, Alan Sorum
Sinking Likely Due to Thru-Hull Fitting Failure, Alan Sorum
Blocking Failure, Alan Sorum
Hull Damage From Blocking, Alan Sorum
Improper Shore Power Cord, Alan Sorum


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