[ThunderSleeps]

What do you load it down with to stress test it and/or ensure it meets rated hp? What can absorb 100K+ hp?

[DungeonMaster]

What do you load it down with to stress test it and/or ensure it meets rated hp? What can absorb 100K+ hp?

A generator just like HP checks on train engines.

[Steely Tom]

What can absorb 100K+ hp?

Big cargo ships use diesel engines of that size.

[al baby]

a barnacle encrusted wooden displacement vessel

[SandRat]

You load it down with Michelle Obama, Rosie O’Donnell and Mama Cass.

[bullfeather]

probably a water wheel with variable pitch blades

[Paladin2]

The electrical grid.

[VTenigma]

It looks like there is a pretty big Water Brake Dynamometer hooked to the output shaft in the lower right of the picture. {blue}