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An Army Jump Master giving the hand signal for "30 seconds" over a drop zone. Hand and arm signals for United States Army use were first established in Field Manual 21-60. They were amended in Training Circular 3-21.60. [1] Hand and Arm signals are one of the most common forms of communication used by United States Army soldiers or group of ...
Canadian Rule Books contain all hand signals, voice signals and flag signals as well as fixed trackside signal indications necessary for operation. These rule books specify various methods of operation in both signalled territory and dark territory , where manual methods of granting track authority must be used.
In order to hook and unhook the loads, the operator usually works in conjunction with a signaller (known as a "dogger", "rigger" or "swamper"). They are most often in radio contact, and always use hand signals. The rigger or dogger directs the schedule of lifts for the crane, and is responsible for the safety of the rigging and loads.
What is now the International Code of Signals was drafted in 1855 by the British Board of Trade and published in 1857 as the Commercial Code. It came in two parts: the first containing universal and international signals, and the second British signals only. Eighteen separate signal flags (see chart) were used to make over 70,000 possible messages.
The hand signal "OK" Diver communications are the methods used by divers to communicate with each other or with surface members of the dive team. In professional diving, diver communication is usually between a single working diver and the diving supervisor at the surface control point.
A US Navy crewman signals the letter 'U' using flag semaphore during an underway replenishment exercise (2005). Flag semaphore (from the Ancient Greek σῆμα (sêma) 'sign' and - φέρω (-phero) '-bearer' [1]) is a semaphore system conveying information at a distance by means of visual signals with hand-held flags, rods, disks, paddles, or occasionally bare or gloved hands.
Crane or large vehicle drivers do not always have clear visibility of the loading area, especially when tower cranes are employed. The banksman is in charge of the crane movements from the point of loading and unloading. They may use a system of hand signals or a radio link.
The following other wikis use this file: Usage on fr.wikipedia.org Marshaller; Usage on it.wikipedia.org Aircraft marshalling; Usage on ja.wikipedia.org