[quikdrw]

>>> Ummmm....ok....what on earth for?

To remove and replace parts that won’t come out any other way, like an engine or generator.

[LasVegasMac]

Ok, thanks.

[Eric in the Ozarks]

Ditto big ships. I’ll never forget the first time I saw a 1,000 foot ore carrier with a huge hole in her side in Duluth. New engine block and that was the only was to put it in. After the install, the American Bureau of Shipping inspects everything and she’s on her way.

[magslinger]

Or a pop machine.