When you are carrying a multi-million dollar of asset, when you have the responsibility of pride and namesake of a billion-dollar shipping company on your shoulders, you can’t just go buy a new ship for each trade tour around the world. You have got to manage the condition of the ship. You need to give your ship the desirable care so that it doesn’t cold and sails the sea for many years to come. But where does this ship care happens and how does it happen? Yes, Dry-Dock’s what the place is called and now let’s discuss the most important part of the dry dock that is Ship Painting erstwhile called Hull Painting.
Hull Painting: Pre-painting Procedures & Steps of Painting
Hull Painting is the application of a specially categorized coating of oil paint or the mixture of both to the outboard or outer layer of the hull to prevent the development of sub-aquatic microorganisms and algae which adversely affects the durability and performance of the ship and also results in higher consumption of fuel by the vessel. The frequency of painting is the same as that of dry-dock. Usually, after a dry-dock, a vessel’s paint stays and works well against marine growth for about five years, after which it needs to give itself a dry-dock visit again.
Hull Painting on the dry-dock mainly comprises of Washing, Blasting, and Painting –
1. Washing: Highly pressurized freshwater is used for the removal of algae and chlorides from the outer layer of the vessel.
2. Blasting: Blasting is yet another primarily used technique for the removal of corroded paint and rust from the sides of the basin. Sometimes the complete layer of the old paint is removed for the brand new furnishing.
3. Painting: After completion of the blasting process, the entire vessel is rinsed and painted entirely in order to safeguard the positivity of the steel and prevent it from any corrosion in the near future. Antifouling paints are used on the underwater sides to restrict the growth of chlorides and algae so as to help the vessel move with its original speed and desired fuel consumption.