![]() ![]() To indicate to the vehicle behind to reduce its speed.Next, point down to the road with the pointer finger fully extended.Extend your left arm straight out of the window.To indicate that there is an obstacle on the road such that the vehicle behind lowers its speed.Hand Signal: An open hand is placed over the head.ĭescription: This is used to indicate that a safety stop is needed, usually at 15 feet for 3 minutes to off-gas nitrogen before surfacing. Hand Signal: A hand is drawn across the throat.ĭescription: This is a critical signal indicating immediate danger due to lack of air. Description: This indicates that a diver is low on air and the dive needs to be terminated soon. Hand Signal: A closed fist is placed against the chest. Description: This is used to direct attention to a specific object or area. Hand Signal: The index and middle fingers form a “V” and are then pointed in the direction you want the other diver to look. Hand Signal: The index and middle finger form a “V”, point towards the eyes and then towards the individual who needs to pay attention.ĭescription: This is to catch another diver’s attention and direct their gaze towards you. “Go Down”ĭescription: This is used to signify that it’s safe to descend or continue descending. Description: This signal is used to indicate that the diver should ascend to the surface or shallower depth. Hand Signal: The hand is extended with the palm facing outward, much like a stop sign.ĭescription: This is used to indicate that one should halt their movement or actions. The nature of the problem is usually communicated immediately after this signal. Hand Signal: A flat hand is waved horizontally back and forth.ĭescription: This signal indicates that there is a problem. It is often the first and last signal exchanged between divers. The remaining fingers are extended.ĭescription: This is a universal signal that indicates everything is going as planned. Hand Signal: The tip of the index finger touches the tip of the thumb, creating a circle. Here are the most important ones to review or practice for your next dive trip: 1. You’ll learn all the important underwater hand signals during your Open Water Diver course. They usually work over medium distances but require some fine-tuning. ![]() They are common in the military, combat diving, and saturation diving, however, have also become regular occurrences in scientific diving and for filmmakers. Some full-face masks can house underwater communication systems similar to walkie-talkies. In technical diving, they can also be used to mark decompression stops and procedures. These can be used to jot down information like dive times, depths, or any other specifics that cannot be easily conveyed with hand signals. Writing Slatesĭive instructors and technical divers especially use writing slates for more complex messages. Quick flickers or circling motions with the dive light can get another diver’s attention and there are numerous other signals. In darker environments like in cave diving or night diving, we can use dive lights to communicate. Scuba diving hand signals are our primary type of underwater communication. They are easy to understand and you’ll learn them during your Open Water Diver course. Hand signals are the primary method of underwater communication we use as scuba divers. Ways to Communicate Underwater Hand Signals Scuba Diving Hand Signals & Underwater Communication – Table of Contents
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