A bosun's chair, in use by a bosun, re-tarring a section of a backstay on the prince william after making a minor repair. a window cleaner's bosun's chair connected to a descent-only rope system a bosun's chair (or boatswain's chair ) is a device used to suspend a person from a rope to perform work aloft.. Before any worker begins window cleaning at a building for which a suspended scaffold, boatswain's chair or similar single-point suspension equipment is used, every employer, contractor and sub-contractor who proposes to carry out window cleaning at the building shall give notice of the proposed window cleaning by telephone to an inspector in. Window cleaning, or window washing, is the exterior cleaning of architectural glass used for structural, lighting, or decorative purposes. it can be done manually, using a variety of tools for cleaning and access.. ...
