Shopping Cart

Your cart is empty.

Your cart is empty.

Marine 31 Port to Starboard All Purpose Cleaner | Multi-Surface Cleaner for Boats, Homes & More | Effective on Vinyl, Fabric, Rubber, Carpet & Upholstery | Concentrated Formula | M31-302-NEW | 128 Oz

5.0 (2) Write Review
Free shipping on orders over $29.99

$59.99

$ 26 .99 $26.99

In Stock

About this item

  • VERSATILE USE: Marine 31 Port to Starboard Cleaner cleans marine surfaces and home items. Use on vinyl, fiberglass, & upholstery for a spotless shine!
  • POWERFUL STAIN REMOVER: Removes black streaks, mildew, and other common stains that are found in the marine environment. Can also remove salt water stains from your boats' gel coat
  • CUSTOM DILUTION FORUMLA: Use Marine 31 Port to Starboard Cleaner full strength or dilute for specific tasks.
  • MARINE & HOME CLEANER: Marine 31 Port to Starboard safely removes grime from boats and home surfaces. Can also remove salt water stains from your boats' gel coat


Product Description

Marine 31 Port to Starboard All Purpose Cleaner 20Oz bottle

Marine 31 Port to Starboard All Purpose Cleaner - Marine & Boat, Home & Patio

Safely clean virtually any marine surface!

Marine 31 Port to Starboard All Purpose Cleaner is a marine cleaner that encapsulates dirt and grime, leaving marine surfaces clean and fresh. Safe for virtually any surface, Marine 31 Port to Starboard All Purpose Cleaner can be used to get rid of black streaks, mildew stains, and other common messes that are found in the marine environment. Concentrated formula dilutes according to specific jobs for vinyl, carpet, upholstery, and more!

Available in a 20 Oz bottle or a 128 Oz Gallon

Marine 31 Port to Starboard All Purpose Cleaner 20 Oz

Marine 31 Port to Starboard All Purpose Cleaner 128 Oz

Marine 31 Port to Starboard All Purpose Cleaner works great on:

  • Vinyl
  • Fabric
  • Rubber
  • Fiberglass
  • Upholstery
  • Inflatable Boats
  • Sailboat dodgers
  • Boat Covers
  • Decks and more!
Marine 31 Port to Starboard All Purpose Cleaner applied simply, cleans quickly!

If it's dirty, Marine 31 Port to Starboard All Purpose Cleaner will make it clean once again!

Marine 31 Port to Starboard All Purpose Cleaner is tough on grime but safe for the environment.

Use Marine 31 Port to Starboard All Purpose Cleaner to clean off salt and mildew stains from gel coat, drink spills from vinyl and clean virtually any other surface of your boat that gets dirty from every day use.

Concentrated formula dilutes accordingly to specific cleaning tasks; use full strength for mildew stains or dilute 1:10 (cleaner/water) for carpet and upholstery.

How To Apply Marine 31 Port to Starboard All Purpose Cleaner

  1. Always test on inconspicuous area to ensure compatibility.
  2. For heavily soiled surfaces, use full strength.
  3. Agitate with a towel or brush if needed.
  4. Rinse thoroughly or wipe surface with a damp microfiber towel.
  5. For light duty cleaning, dilute 1 part concentrate to 5 parts water. For carpet and upholstery, dilute 1 part concentrate to 10 parts water.
Marine 31, your source for Marine Waxes, Cleaners, and Polishes

Marine 31 Waxes, Cleaners, & Polishes

Founded along coastal South Florida Marine 31 has provided harbor-safe Waxes, Cleaners, and Polishes for over 7 years. Through strenuous research and development Marine 3 remains the leader in world-class boat care. We can say without hesitation that every Marine 31 product is the best that each respective category has to offer. We’ve personally tested each and every product in the Marine 31 line and we’re proud to say those test boats have never looked so good!


Chris Arnoult
Reviewed in the United States on August 14, 2024
The wider clean part is the small spray bottle and and the other parts are the large 1 gallon container. Smells like simple green. I would like four small spray bottles as a replacement.
John Dunlop
Reviewed in Canada on October 7, 2024
I was hoping it was going to work the same as my marine 31 Mildred remover, but not the case