# Quick Answer: How do you calculate the volume of a scuba tank?

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## How do you calculate gas for scuba diving?

A few examples:

1. A dive of 45 minutes to 25 meters: 12.5 x 45 x 3.5 = 1969 liters of air.
2. A dive of 1 hour to 10 meters: 12.5 x 60 x 2 = 1500 liters of air.
3. A dive of 30 minutes to 35 meters: 12.5 x 30 x 4.5 = 1687.5 liters of air.

## Is it illegal to scuba dive without certification?

It is not illegal to dive without certification, but no reputable dive center or club would allow someone to dive with them without first being certified to scuba dive.

## How long does a 100 scuba tank last?

Aluminum tanks are more common in tropical waters where most recreational diving happens. A modern and properly cared for steel tank lasts up to 50 years.

## How long does a scuba tank last at 47 meters?

At 47 meters even an experienced diver with a fantastic air consumption rate would quickly drain their scuba cylinder, probably in less than 20 minutes. An inexperienced diver swimming, talking and being harassed by sharks MIGHT make it five minutes at that depth.

## What is DCR in diving?

PSI used / Time = Depth Consumption Rate (DCR)

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## How long is air good in a scuba tank?

Based on personal experience, an average open-water certified diver using a standard aluminum 80-cubic-foot tank on a 40-foot dive will be able to stay down for about 45 to 60 minutes before surfacing with a safe reserve of air still in the tank.

## How many Litres is a scuba tank?

Cylinders used for scuba typically have an internal volume (known as water capacity) of between 3 and 18 litres (0.11 and 0.64 cu ft) and a maximum working pressure rating from 184 to 300 bars (2,670 to 4,350 psi).

## What is the lifespan of a scuba tank?

The service life of a properly cared for modern steel scuba tank is widely considered to be 50 years or more.

## Is it bad to empty a scuba tank?

NEVER bring your cylinder back from a dive empty! Once you completely drain your cylinder of all its air, there is no pressure keeping things out of it. … And since most folks dive in salt water, and salt water mixed with metal equals rust, this is a great way to corrode the inside of your cylinder.

## How much does a full scuba tank weight vs empty?

When the tank is completely empty, how much does it weigh? Well if it weighs 13.2 pounds full of air, then it would weigh about 7.3 pounds when it is empty (13.2 lbs – 5.9 lbs = 7.3 lbs).