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Dive Adventures Scuba Glossary is for scuba divers and anyone else interested in scuba diving terminology. To find the scuba glossary term that you are looking for click on the letters below to display the scuba glossary terms that begin with that letter. If you feel that we have missed a term from our scuba glossary or would like a term added to our scuba glossary please contact us so that we can add that term to our scuba glossary. Dive Adventures thanks you for visiting our scuba glossary and helping us to make it better for other scuba divers and those interested in scuba diving terminology Optionally you may select "All Terms" to display the entire list of terms from our scuba glossary database.
A B C D E F G H I J K L M
N O P Q R S T U V W X Y Z
All Terms
F
Fahrenheit
The temperature scale used in the United States. F=(C/.556) +32
Fathom
A linear unit of measurement (equal to 6 feet) for water depth - commonly used by fishermen. Depth = V x T/2
ffw
feet of fresh water. Measurement of depth in fresh water.
First Stage
Regulator attached to the scuba tank that lowers the tank pressure to ambient pressure plus a pre-determined pressure (e.g., ambient + 140 psi).
Foramen Oval
The opening between the left and right atria of the fetal heart which remains open in about 30% of people, allowing passage of bubbles into the arterial circulation which is believed to cause symptoms of arterial gas embolism.
Forward Roll Entry
A method of entering the water while in full SCUBA gear from a boat transom or a pier by bending at the knees and, while firmly securing the mask, rolling forward into the water landing on one's shoulders and tank.
Free Diving
Diving without any scuba or other equipment and synonymous with breath-hold diving.
Frenzel maneuver
Technique for equalizing the middle ear by pinching the nose closed and moving the back of the tongue upwards.
Frog kick
Finning technique where thrust is developed by sweeping the fins horizontally toward each other with the fins twisted into a nearly vertical plane, with the soles facing each other, followed by a recovery stroke which develops negligible thrust where the fin blades are feathered. The legs are fairly straight during the power stroke. See also modified frog kick.
Frogman
A scuba diver, particularly a military diver on an undercover mission.
fsw
feet of sea water. Measurement of depth in sea water.
FSW
Feet of sea water; used to indicate either an actual depth, or just a pressure equal to that depth (e.g., in an hyperbaric chamber).

There are 12 scuba glossary terms listed.

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Modified 12/04/2014