Mark IIB Pelorus Drift Sight

A Gatty-style drift sight was complex, heavy, and less effective for overwater flying. The Pelorus drift sight was smaller and lighter but required more manual calculation and the use of flares or smoke bombs in certain conditions.

Caption:
The Mark IIB Pelorus drift sight was lighter than most drift sights, but required more work to use.
Type: Artifact
Image Date: 2012
Credit: National Air and Space Museum, Smithsonian Institution
Origin: National Air and Space Museum, Smithsonian Institution
Creator: Dane A. Penland
NASM2012-02117
Innovations
Navigation Methods
 
The Mark IIB Pelorus drift sight was lighter than most drift sights, but required more work to use.