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Ship hull cleaning challenge: many great inventions start when a bold inventor is brave enough to change the problem, or redefine it into a unique or out-of-the-box context.

Publication: The Technology Teacher
Publication Date: 01-MAY-09
Format: Online
Delivery: Immediate Online Access
Full Article Title: Ship hull cleaning challenge: many great inventions start when a bold inventor is brave enough to change the problem, or redefine it into a unique or out-of-the-box context.(Classroom Challenge)

Article Excerpt
Ship hulls must be cleaned to remove marine growth that can actually increase their resistance through the water. Repairs must be made to the huge steel surface; and, of course, the hull must be sanded and painted to prevent rust. How would your students address this problem and perhaps even automate the entire process?

The Problem

When a ship is going to have its hull cleaned, it is brought into a dry dock where it can be worked on. It is a big job, time consuming, and not terribly pleasant, with lots of dust and grime in the air. There is plenty of time allocated to prepare for the job, and lots of time and effort expended to break the job down when it is done. How can a great expanse of metal surface, sometimes irregular at times, be cleaned, prepped, and painted?

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