exterior spar ladder
1Canadarm — For the robotic arm on the International Space Station, see Canadarm2. View of the Canadarm during Space Shuttle mission STS 116. The Shuttle Remote Manipulator System (SRMS), or Canadarm (Canadarm 1), was a mechanical arm used on the Space… …
2Windmill sail — Windmills are powered by their sails. Sails are found in different designs, from primitive common sails to the advanced patent sails. Contents 1 Jib sails 2 Common sails 3 Spring sails 4 Roller reefing sail …
