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## What is the ascent rate when diving?

The answer varies among scuba certification organizations. Some organizations list a maximum ascent rate of **30 feet/9 meters per minute**, while others allow a faster ascent rate. For example, old PADI dive tables (based on the US Navy Dive Tables) allow a maximum ascent rate of 60 feet/18 meters per minute.

## When diving at higher altitudes the proper ascent rate is?

1) Ascent rate is **half the sea level max rate**: 9 meters / 30 feet per minute or slower.

## What is the proper rate of ascent?

Despite the lack of definitive consensus on what ascent rate divers should use, “slow” is a good way to go. The U.S. Navy and the National Oceanic and Atmospheric Administration (NOAA) use a rate of **30 feet per minute**, and recreational dive-training-agency recommendations range from 30 to 60 feet per minute.

## How long does it take divers to ascend?

The **30-feet-per-minute rule** still applies, so if you’re at 15 feet when you start, it should take 30 seconds to surface. For a more in-depth look at making a safe ascent in the last few feet, read How to Make a Safe Ascent after Your Safety Stop.

## What is considered high altitude diving?

For some divers living in landlocked places, learning to dive at high altitude is a necessity. With motivation, proper training and a sound dive plan, any diver can elevate their skills and enjoy altitude diving. Altitude is typically considered a factor in dives **higher than 1,000 feet (305 meters) above sea level**.

## When diving at altitude above 300 meters 1000 feet What is the answer?

Any time you scuba dive at an altitude higher than 300 metres/1000 feet above sea level, you’re **altitude diving**. If you’re ready to discover a hidden world where few have ventured, then the PADI Altitude Diver Specialty course is for you.

## How long can you scuba dive at 30 feet?

BSAC and PADI no-stop dive times:

9 metres (30 feet) dive depth: BSAC no decompression time limit of **243 minutes** (PADI Tables 205 minutes).

## How long can you scuba dive at 60 feet?

The NDL or No-Stop time for 60 feet / 18 meters is **56 minutes** according to the Recreational Dive Planner table.

## How deep can you free dive without decompression?

There’s a bit of physics and physiology involved in a full explanation, but the short answer is: **40 metres/130 feet** is the deepest you can dive without having to perform decompression stops on your way back to the surface.