After slight damage the hull of a ship has to be returned to shape and dents removed. That is what this skill is about.
First we will look at the equipment the craftsman uses for this and in the second part we will explain the successive operations on the basis of an example.
Tools and equipment that the craftsman uses to remove dents:
To remove a dent from the hull of a ship a holder is made from a section of iron profile. See Images 1-7.
Nuts & Washers
Threaded rods are inserted through the holder and will be welded to the hull of the ship. The threaded rods are fitted with nuts and washers.
Dents can be removed without heating the steel plate, however, the operation will be lighter and more accurate if the dent is heated. An oxy-acetylene burner is used for this.
An angle grinder and plate hammer are also used.
A welder is also needed for attaching the holder to the hull.
A slightly dented hull plate is used as an example:
Click to download training lesson plan: