Yellow marks often form on the hulls, especially at the waterline. These are limestone residues from algae and shellfish. There is also foam or rust streaks. To get rid of it without attacking the gelcoat or the paint of its boat, you can use a product already unravelling.
We tried for you the 02 from Nautic Clean, a really effective product. It acts quickly on yellow lines at the waterline or even on rust pits sometimes found on gelcoat.
This product then needs to be rinsed with plenty of water (water jet). Its effectiveness is quickly visible. The 750 ml 02 Nautic Clean sprayer is available for 16,80 € from ships.
