I have been running Pittman, and later the Dumas/Pittman motors, since the 1960's. They are very low current draw, like Dave Welch says, and are built as solid as a brick oven. I have used them on several surface boats and a submarine, in both the 6v and 12v versions,. I believe that the maximum current draw, which occurs on the 6v unit, is about 3-4amps, the 12v maximum is about 2-3 amps.
The motors are low speed/low draw, which makes them ideal for direct drive in a model boat.
"The Japanese solders would die for the Emperor, which made them formidable. The U.S. Marines would die for each other, which made them invinceable"...Iwo Jima