- Lubricates leaf springs on boat trailers
- Protects anchor chain from rust
- Coat rubber ties on boats to keep rubber from drying out
- Dissolves dirt in water pump of boats
- Helps detail outboard motors
- Keeps boat engine parts rust-free
- Keeps boat shifter cables loose and free from rust
- Keeps boat tires non squeaky and lubricated
- Keeps boat trailer locks in good working order
- Keeps brass boat fittings from rusting
- Keeps prop shaft from seizing onto the prop on outboard hydroplanes
- Keeps winch cables rust-free
- Loosens frozen boat parts
- Loosens lugnuts on boat trailers
- Loosens rusted monkey fists on boat
- Loosens rusted screws on ships and other watercraft
- Lubricates anchor rope pulley on boats
- Lubricates bearings of radar antenna on lobster boats
- Lubricates bilge pump on boats
- Lubricates choke lever on boat engines
- Lubricates crank on boat lift
- Lubricates drain plug on boat
- Lubricates galley latches
- Lubricates gyro compasses
- Lubricates hinge bearings on ships
- Lubricates hinges on compartment lids in boats
- Lubricates noisy dock posts on a windy night
- Lubricates pip pins used to hold outriggers on boats in upright position
- Lubricates recline hydro locks in pilot seat tracks
- Lubricates sliding window tracks on boats
- Lubricates speed brake rams and linkage
- Lubricates spool valve handles on boat hydraulic systems
- Lubricates squeaky boat mast
- Lubricates swivel on overhead monitor arms
- Lubricates the steering controls on boats
- Lubricates transmission buttons on old boats
- Lubricates wheel housings on ships
- Lubricates winches on boats
- Lubricates zippers on boat cushion covers
- Polishes and protects boat rails
- Prevents corrosion on boat battery terminals (keep can away from battery)
- Prevents corrosion on boat trailer axle
- Prevents corrosion on radar gear
- Prevents rust on ship seam areas
- Protects and lubricates floating boat docks after thawing
- Protects and lubricates tail shaft on boat propellers
- Protects fittings on boat moorings
- Protects vintage steam equipment on paddlewheel steam boats
- Quiets squeaky boat seats
- Removes buildup on tuner control on am/FM boat radios to get rid of static when tuning
- Removes crud and protects boating blocks
- Removes crud and protects console gauges on boats
- Removes crud from exposed vinyl on boats
- Removes dead insects from boat windshields
- Removes grease and grime and protects brass boat fittings
- Removes grease and grime and protects on-board machine and hand tools
- Removes grime and protects boat hardware
- Removes grime and protects porthole dogs
- Removes grime from boat mats
- Removes gunk and grime from boats
- Removes lake sludge from fiberglass
- Removes oxidation from boats
- Removes river sludge from boat hull
- Removes road tar from boat hulls
- Removes sap from boat frame
- Removes scuff marks from fiberglass areas on boats
- Removes tar from boat tarps
- Removes tree sap from boat windshields
- Removes wax from nonskid surfaces on boats
- Shines and protects blades on hydrofoils
- Spray on rudder to prevent corrosion and loosen stuck parts
- Unsticks stuck boat horn
- Winterizes boat engine parts to prevent rust and corrosion
- Removes ballast oil from tile floors (be sure to wipe floor clean after using WD-40)
- Drives moisture from boat parts
- Drives moisture from a boat’s moving screws
- Helps remove gunk from bilge area