The end of the dirty bottom?

Leaving your boat in the water for a few days will often have you diving with a sponge. If you are not lucky enough to tell someone else to do it and likely to have to get in the water yourself you should have a look at this from Harken….It even smells great!

Read below the Q & A…It has to better than diving in the Medina River!


How do I apply?

Shake bottle well. Apply small amount to a damp washcloth or small sponge and wipe onto hull in a circular motion. Only apply onto a small area at a time (1 square meter) and do not allow it to dry on hull surface. Immediately polish away any excess with a dry towel, soft cloth or micro-fibre cloth (do not allow product to dry; polish away excess immediately upon application – within 90 seconds). No wait time, and no crusty haze to remove. Just wipe on and immediately wipe away excess. Move onto the next area of the hull. It’s that easy.

How much polish do I need?

A good guide is that if applied properly using the DAMP CLOTH APPLICATION METHOD (on website as well as on Antifoul label) then just 150 milliliters will be enough for complete hull coverage for any 30 footer.  1 pint is enough to completely coat an entire 45 footer.  Just 2 pints is enough to coat an entire VOR 70 with their huge underbody.

Can I apply it over Antifoul?

Yes, it’s no problem to apply Antifoul Speed Polish over the top of any bottom/antifoul paint. This will definitely create a faster hull surface.  We advise that you perform a test on a small section before apply polish to the entire hull.

 What surface finish is required to the hull before application? 

The polish is only as durable as the surface to which it is applied to.  In other words, speed polish applied to a soft, chalky, ablative paint may not last nearly as long as a proper application to a freshly wet-sanded hull surface.

 How long will it last in the water?

Many factors will govern how long the polish will protect the hull against growth. These include water quality, temperature, light penetration and many more. The duration can therefore differ from venue to venue, month to month, etc. In most cases the polish is expected to protect against growth for a few weeks.

 And how long will it last when the boat is out of the water?

Once properly applied to a dry hull, if left on a trailer for example, life of product will be a full year of protection (sealer, UV and antifoul properties).  The citrus base will eventually “dry out” a bit, but that does not affect the coating once it is applied to the hull.

 How do I know when to reapply?

The best way to “test” or check that the product is still protecting the surface of the hull, and that it is still the fastest surface finish possible is to spray the hull surface with water (a quick spray from a hose) and as long as the water quickly beads up and rolls down the hull (due to greatly reduced friction), then your finish is good to go.  If you notice any areas where water is sticking, adhering or otherwise sheeting to the hull, then that would suggest that it’s time to “touch up” that specific area if the hull… lifting sling areas, or waterline areas where oil and grime or back streaks may have been cleaned away are all “high abrasion areas” that should be casually checked on.