Figure 51 (cont.) The HIRONDELLE II sounding machine used by Prince Albert I of Monaco. During the evolution of this machine, two important changes were made on the PRINCESS ALICE II which were used on this machine. The power was provide d by an electric motor, and the cable passed first through a winch before being wound on the reel. This machine kept the winch but returned to steam power.
Photo Category: Oceanography - Historical instruments