One of the most important
underwater skills is the ability to communicate numerical information
such as deco times, tank pressures etc. Once you are used to the system,
it's pretty easy to remember, with that in mind, I have created this
page where you can enter a number in the text box below and it will then
display the required signals to signify that number. As with most hand
signals, they are displayed in front of your chest.
Once you have done a bit of revision, why not take the
test a
few times to see how you go.
