Tramex SMP Skipper Plus Moisture Meter for Boats

Price: $446.00
Analog Marine Moisture Meter
Tramex SMP Skipper Plus Moisture Meter for Boats (Non-Destructive)

Tramex Skipper Plus is a non-destructive moisture meter for the marine industry

The Tramex SMP Skipper Plus non-destructive moisture meter provides a complete, safe method for detecting excess moisture in GRP and wooden boats. Three scales of sensitivity allow moisture detection in salt or fresh water.

Moisture can cause peeling and blistering of applied finishes and treatments, newly applied finishes can fail prematurely if the wood it is applied to is not sufficiently dry. Hidden or trapped moisture can lead to mold and biological growth.

The Tramex SMP Skipper Plus can be moved across the surface of the boat to moisture survey in a fast and thorough manner, detecting moisture non-destructively through paint and coatings on wood up to a depth of 1.25". The Tramex Skipper Plus can also be used to detect leaks and trace them to source both above and below decks.

Typical Applications

  • Early detection before blistering appears
  • Identifying the affected area
  • Monitoring hull during de-humidification and repairs
  • Checking stripped or peeled areas for dryness prior to re-coating

How it works

The Tramex Skipper Plus moisture meter detects moisture in wood or GRP (Glass Reinforced Plastic) by measuring the resistance between two low frequency AC signals transmitted from the soft rubber electrodes on the base of the instrument.

Because salt water is more conductive than fresh water, the Skipper is fitted with different ranges of sensitivity to allow testing of wood or GRP in either fresh or salt water environments.

Simply select the correct scale: Scale 1: Moisture content in hardwood for fresh water (%H20) Scale 2: Moisture in GRP (Comparative) Scale 3: Surface Moisture(Comparative)


  • Non-destructive detection and measurement of moisture in wooden boats, GRP (Glass Reinforced Plastic) boat hulls, wooden parts, components, decks etc.
  • External rubber electrodes in direct contact with material being tested for best sensitivity, repeatability and greater depth of signal penetration.
  • Wide range of readings for wood of 5 to 30% on hard wood scale and 0 to 100 on comparative scale for GRP and other materials.
  • Large, clear, easy to read display giving meaningful readings
  • Automatic power cutoff switches "Off" when not in use to save Battery
  • Confirm if wooden boats are dry before painting or varnishing
  • Early detection before blistering appears
  • Trace deck and bulkhead leaks
  • Identify extent of moisture affected area
  • Deep signal penetration to detect elevated moisture through most covering and coating materials and deep into the core of composite hulls without having to damage or puncture the material being tested.
  • Hold function enables user to "freeze" the reading, useful when taking readings in awkward places where the meter face may not be visible.
  • Three measurement ranges optimized for testing of different materials such as hardwood, GRP and surface moisture.
  • High moisture audio warning tone that can be switched on or off
  • Identify the presence of moisture osmosis in fiberglass hulls
  • Check if racing boats are carrying excess moisture weight
  • Monitor hull during dehumidification
  • Check stripped areas prior to re-coating


DisplayAnalog Meter
Range5% to 30% on hard wood moisture content
Measurement depth± 1.25" (32 mm)
Measuring methodNon-destructive signal resistance
Measurement frequency31 KHZ
Electrodesco-planar conductive rubber
Net weight9 ounces (260g) including battery
Dimensions6 x 3.2 x 1.2" (150 x 80 x 30 mm)
Battery9v battery
Warranty1 year

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