Educational film about the testing of seaplane floats, Hamburg, Germany.
Seaplane water floats are tested by machines at a laboratory in Hamburg, Germany.
Full titles read: "Over now to Hamburg to see their - HIGH SPEED FLOATERS - Dragged through the water at a speed up to a mile a minute floats are tested by this giant machine, to ascertain the best shape to give least resistance."
Several shots of large machine moving forwards at speed through an indoor water canal.
Intertitle reads: "The graphs indicate various technical details as to speed, drag, etc. required by the experts - "
C/U's of line graph. M/S's of the floats skimming through the water being held down by a machine.