International Ultra 300 hard antifouling paint delivers durable, one‑year protection for powerboats and streamlined yachts in the harshest fouling conditions.

• Premium hard antifouling (also referred to as antifoul, hard antifoul, bottom paint) engineered to resist rapid wear
• One‑year protection in high‑challenge fouling areas
• Coverage 9 m² per litre; 2.5 litres treats up to 22.5 m² (approx 242 ft²)
• Colour: Dark Grey (YBB727)
• Suitable substrates: GRP, painted steel, aluminium and timber; can be applied over compatible existing antifouling—follow the manufacturer's surface preparation guidance
• Typical application: 2 coats for full protection; apply by brush, roller or airless spray
• Typical drying/recoat times: touch dry 2–4 hours; recoat 12–24 hours depending on temperature and humidity—refer to the product label for exact times
• Suitable for salt, brackish and fresh water and effective on many planing powerboats (check technical data for speed recommendations)
• Available in improved, truer colours with enhanced UV stability
• Size 2.5 litres (0.66 US gal / 0.55 Imp gal)
• Protects against all types of fouling
• Follow the manufacturer's instructions for surface preparation, application and disposal; contains biocides—consult the Safety Data Sheet (SDS) and local regulations and wear appropriate protective equipment

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