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MARIKATE On & Off Hull/Bottom Cleaner

Powerful cleaner

Removes waterline, rust and scum. Won't harm fiberglass. Brush-on/rinse-off, biodegradable formula.
  • Quart or gallon
Customer Reviews
Product Models
Description WM Model # MFG Part # Availability Price Quantity  
On & Off Hull/Bottom Cleaner - Gallon 127979 MK20128
In stock online.

$59.99

On & Off Hull/Bottom Cleaner - Quart 127961 MK2032
In stock online.

$19.99

Product Description

Powerful cleaner

Removes waterline, rust and scum. Won't harm fiberglass. Brush-on/rinse-off, biodegradable formula.
  • Quart or gallon

REVIEW SNAPSHOT®

by PowerReviews
Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon
 
4.7

(based on 25 reviews)

Ratings Distribution

  • 5 Stars

     

    (23)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (2)

92%

of respondents would recommend this to a friend.

Pros

  • Easy to use (21)
  • Visually pleasing (5)

Cons

    Best Uses

    • Outdoors (8)
      • Reviewer Profile:
      • Casual/ recreational (13), Advanced (9)

    Most Liked Positive Review

     

    It really works!

    We had stubborn algae stains on our PWC from several years of neglect. I tried a ton of different cleaners and nothing would cut it. A helpful associate at West Marine recommended this stuff...Read complete review

    We had stubborn algae stains on our PWC from several years of neglect. I tried a ton of different cleaners and nothing would cut it. A helpful associate at West Marine recommended this stuff and it absolutely works!!! I put some in a spray bottle and as soon as it hit the hull you could see it immediately dissolve the stains. I did small areas and washed it off immediately with a lot of water. So easy to use. I recommend that you read the directions and warnings, this is an acid-based product! Avoid getting it on any non-fiberglass materials. I got a small amount on my sponsons and it left white spots, however, it did not affect the decals.

    VS

    Most Liked Negative Review

     

    Bad Bottle??

    Purchased On and Off on recommendation of West Marine. Was assured it would "instantly" remove everything from barnacle cement to waterline stains. It did neither. Made NO DIFFERENCE whatsoever on...Read complete review

    Purchased On and Off on recommendation of West Marine. Was assured it would "instantly" remove everything from barnacle cement to waterline stains. It did neither. Made NO DIFFERENCE whatsoever on any stain! Will try to get refund from WM.

    Reviewed by 25 customers

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    5.0

    Excellent results

    By 42 Carver

    from Toronto

    About Me High-end Shopper

    Pros

    • Easy To Use
    • Works Effectively

    Cons

      Best Uses

        Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

        Was skeptical but it really works as advertised. Did a 42 Carver today and this stuff is great. White fiberglass hull with yellow / brown stains and a waterline stain stain that would not come off with any traditional cleaners I tried. I was concerned about dulling the finish - no issues. Paint this on - rince it off. Done. Seriously. Wished I found it a few years ago. Lessons learned: I should have used a 3" brush instead of a 1.5". The thing is to get it on and rinse it off - did a 2 x 2 section at a time, 60 seconds, rinse. Works VERY fast - in front of your eyes as you paint it on. Its acid based so wear gloves, etc. Its stinky but not an issue outdoors. After rinsing buffed with 3M compound/wax - hull looks as NEW. Very very pleased. Should have taken before and after pics.

        • Primary use:
        • Personal
         
        1.0

        Save your money

        By Brian B.

        from Vonore, TN

        About Me Casual/ Recreational

        Verified Reviewer

        Pros

          Cons

          • Ineffective
          • Messy

          Best Uses

            Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

            It took 3 hours of hard scrubbing with this product to clean the hull of my 19.5 foot bass boat. Simply not worth it! Will go back to my tried and true method of using a heavy concentration of Dawn dish detergent.

            (1 of 1 customers found this review helpful)

             
            5.0

            It works...

            By Rob

            from Bullhead City, AZ

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Easy to Use

            Cons

              Best Uses

              • Outdoor

              Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

              This product is easily the best I have used to remove waterline stains and scum after having the boat in the water all year. I spray it on and rinse almost immediately. That being said, I wear rubber gloves, long sleeve shirt, protective glasses, hat and plastic tarp on the trailer when using the product.

              (1 of 1 customers found this review helpful)

               
              5.0

              Best stain cleaner of the all

              By Builderboy

              from Minnesota

              Verified Buyer

              Pros

              • Does Not Damage Vinyl
              • Easy to Use
              • Great For Vinyl Fence
              • Just Brush It On
              • Works Well On Fiberglass

              Cons

                Best Uses

                • Any Vinyl Product
                • Outdoor

                Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

                I love this stuff. Used it to clean iron stains off vinyl fence....it just washes the stains away FAST!

                (3 of 3 customers found this review helpful)

                 
                5.0

                Awesome product

                By waverunner

                from audubon,nj

                About Me Advanced

                Pros

                • Easy to Use

                Cons

                  Best Uses

                  • Outdoor

                  Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

                  Wow, THE most effective hull cleaner for fiberglass hulls on the market.Use as directed and it took every thing off.Dried river scum,Waterlines,Stains.Hull looks brand new.Quart bottle will last forever on a pwc as U use so lttle to do the job.

                  (2 of 2 customers found this review helpful)

                   
                  5.0

                  IT WORKS!

                  By Texas boater

                  from El Paso, TX

                  About Me Advanced

                  Verified Buyer

                  Pros

                  • Easy to Use

                  Cons

                    Best Uses

                      Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Quart:

                      This stuff works! Easily took off a season of algae growth and hull stains. Just as advertised, brush it on and hose it off. No scrubbing, no hull damage. I am highly impressed.

                      (1 of 1 customers found this review helpful)

                       
                      5.0

                      IT WORKS!

                      By Boater

                      from El Paso, TX

                      About Me Advanced

                      Verified Reviewer

                      Pros

                      • Easy to Use
                      • Visually Pleasing

                      Cons

                        Best Uses

                          Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

                          This stuff really works. Pulled the boat out of the Potomac River July 2012 and power washed it which didn't do much at all to remove scum line and heavy algae build-up. Boat sat until this June in storage. Bought this stuff and brushed it on and stains, scum line and baked on algae disappeared. This will be on my shelf from now on, it's great to find something that works as advertised.

                          Service and delivery comments:

                          Prompt delivery, right on time.

                           
                          5.0

                          This is the real deal

                          By Big Country

                          from Linthicum Heights, MD

                          About Me Advanced

                          Verified Reviewer

                          Pros

                          • Easy to Use
                          • Visually Pleasing

                          Cons

                            Best Uses

                              Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

                              Just follow the directions, brush it on and watch the yellow scum lines disappear. Hadn't cleaned my white hull bass boat in 2 years and this product stripped the yellow right off, 2 applications in the really heavy spots but very easy to use. Did the entire underside of a 21' bass boat in 2 hours. Great stuff, don't waste your money on other products that you work harder to apply and they don't do near what this product does. It's so easy I'll clean the boat a couple times a year. Buying the gallon next time since I know this stuff is the bomb. Great Product West Marine.

                              (2 of 4 customers found this review helpful)

                               
                              1.0

                              Bad Bottle??

                              By Hank

                              from St Simons Island, GA

                              About Me Advanced

                              Pros

                              • Easy to Use

                              Cons

                              • Ineffective

                              Best Uses

                                Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

                                Purchased On and Off on recommendation of West Marine. Was assured it would "instantly" remove everything from barnacle cement to waterline stains. It did neither. Made NO DIFFERENCE whatsoever on any stain! Will try to get refund from WM.

                                (1 of 1 customers found this review helpful)

                                 
                                5.0

                                AMAZING

                                By Crab Pot Killer

                                from Pasadena, MD

                                About Me Casual/ Recreational

                                Verified Reviewer

                                Pros

                                • Easy to Use
                                • Visually Pleasing

                                Cons

                                • Harsh to breathe

                                Best Uses

                                • Outdoor

                                Comments about Marikate Shipshape On & Off Hull/bottom Cleaner - Gallon:

                                Brush it on, rinse it off. Took 2seasons of brown stain right with little effort. Great stuff just don't breathe it in.

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