AF-33 Antifouling Paint

AF-33 provides multi-season antifouling protection at a single-season price.

As a harder ablative paint, AF-33 slowly wears away with use. This offers several advantages over hard, epoxy paints. First, the slow-wearing nature of AF-33 results in minimal paint build-up, which minimizes the need for sanding at haulout. Second, as AF-33 wears away, fresh biocide is released for unbroken antifouling effectiveness. Lastly, as AF-33 wears away, it self-polishes, which reduces drag and boosts fuel efficiency. Not for sale in States where prohibited by law.

AF-33 is a suitable choice for recreational powerboats, sailboats, fishing vessels, tugs, barges, ferries, crab traps, and other vessels that require protection against fouling. AF-33 can be applied to fiberglass, wood, and properly primed steel hulls. Do not apply to aluminum hulls. Offered in Red, Blue, Dark Blue, Black, and Green. Not for sale in States where prohibited by law.

Key Features

• Harder, self-polishing copolymer ablative 
• Can be applied to all types of hulls
• Also suitable for crab traps and other objects 
• Self-polishing formula reduces paint build-up 
• Not for application on aluminum hulls

Physical Data

• Type: Copolymer ablative
• Finish: Semi-gloss
• Available Colors: Dark Blue, Green, Teal, Red, Light Blue, Black
• Components: 1
• Curing Mechanism: Solvent release
• Solids by Volume: 56% +/- 2%
• Coverage (Theoretical): 359 sq. ft. @ 2.5 mil. (DFT)
• VOC: 398g/l max.
• Active Ingredients: 33.6% cuprous oxide
• Additives: A Pint of Biocop TF may be added for dual-biocide protection
• Flash Point: 100°F

Application

• Application Method: Airless and conventional spray; Solvent-resistant brush or 3/8" nap roller
• Number of Coats Recommended: 2-3
• Wet Film Thickness/Coat (Recreational Boats): 4.5mil.
• Dry Film Thickness/Coat (Recreational Boats): 2.5mil.
• Wet Film Thickness/Coat (Commercial Boats): 5.4-8.9mil.
• Dry Film Thickness/Coat (Commercial Boats): 3.0-5.0mil.
• Thinner: Sea Hawk 2033, 2035

Drying Times:

*The above dry times are minimums. May be recoated after the minimum time shown. There is no maximum dry time before launching.

Get the right amount of paint:

Note: The following recommendations are for two coats of paint. All values are approximate

Another way to determine bottom paint quantity is to estimate the approximate surface area of the hull below the waterline, using the following formula:

Length x Beam x .75 = Approximate underwater surface area in square feet.

Each paint has a “theoretical coverage” area, but most paints require at least two coats, so you can expect actual coverage to be no greater than half of the theoretical value.

More information

For detailed application instructions, see the AF-33 Data Sheet. NOTE: Manufacturer data sheets are subject to revision. Linked data sheets are believed to be accurate at the time of publication.