The Mark IV was first used in mid 1917 at the Battle of Messines Ridge.

Tiger II is the common name of a German heavy tank of the Second World War.

Praying on the wreck of a Soviet tank.

In this time over 6,292 were built.

Scuba diving attracts many visitors to the island.

The T 70 remained in service until 1948.

In 1942, Germany delivered 11 tanks to Romania and 32 to Hungary, many of which were lost on the Eastern Front between the final months of 1942 and the beginning of 1943.

Overnight, 500 Iraqi tanks moved in towards the Khorramshahr Ahvaz road.

The three children lost their legs as a result of tank shell.

Also, when you get down there, you find that the water is very, very clear.

There are a number of dive sites and a diving resort.

Trimix is a breathing gas, consisting of oxygen, helium and nitrogen, and is often used in deep commercial diving and during the deep phase of dives carried out using technical diving techniques.

A group of artists decided to paint a life size tank on a wall. It's one to one.

The region is rich in coral and has many diving sites.

Since the incident the United Kingdom had changed its diving procedures.

It is further defined as an activity that includes one or more of the following diving beyond 40 meters 130 feet, required stage decompression, diving in an overhead environment beyond 130 linear feet from the surface, accelerated stage decompression and or the use of multiple gas mixtures in a single dive.

A 1989 listing of forces shows two Czechoslovak armies in the west, the 1st at Příbram with one tank division and three motor rifle divisions, the 4th at Písek with two tank divisions and two motor rifle divisions.

Children playing with an old abandoned tank from the Angolan Civil War in Kuito, Bi Province.

The AMX 13 is a French light tank produced from 1953 to 1985.

I want to talk about Rachel Corrie who was in her teens when she stood in front of an Israeli tank to say, End the occupation.

The secular opposition s accession to power on the back of a tank might feed the Islamists rage for years to come.

And the problem, the limitation of diving with air is all those dots in your body all the nitrogen and all the oxygen.

And I remember coming up from one of these deep dives, and I had this fog, and the narcosis takes a little while to, you know, fade away.

Another possibility is to dive from the outside of the volcano through the channel into the caldera.

There are plenty of coral dive sites and a wide variety of marine life.

The original octopus idea was conceived by cave diving pioneer Sheck Exley as a way for cave divers to share air while swimming single file in a narrow tunnel, but has now become the standard in recreational diving.

Pure oxygen is mainly used to speed the shallow decompression stops at the end of a military, commercial, or technical dive and is only safe down to a depth of 6 meters (maximum operating depth) before oxygen toxicity sets in.

This arrangement was seen to be a serious problem, even before the first tanks were issued.

Alright, closed circuit rebreather what is it about it that makes it different from scuba, and why is it better?

In this instance the specific form of identity theft is called dumpster diving .

The Leopard (or Leopard 1) is a main battle tank designed and produced in West Germany that first entered service in 1965.

The Fiat M14 41 was a four person medium tank that served from 1941 in the Royal Italian Army.

There are a few dive operators on the island offering manta ray dives and also shark feeding dives.

The Fiat L6 40 was a light tank used by the Italian army from 1940 through World War II.

Hydrox, a gas mixture of hydrogen and oxygen, was used as a breathing gas in very deep diving.

The L6 40 was the main tank employed by the Italian forces fighting on the Eastern Front.

Nothing beats a dip in the cool waters of Rio de Janeiro's world famous beaches on a hot Sunday morning.

Recreation In Darwin Bay there is the possibility to either dive along the inner wall or go to the outer wall, which is less protected.

IDF responded by firing artillery and two tank rounds in an area extending from east of Al Khiam village to Kafr Shuba.

In technical diving, the diver may carry different equipment for different phases of the dive some breathing gas mixes may only be used at depth, such as trimix and others, such as pure oxygen, which only may be used during decompression stops in shallow water.

This is the high tech gadgetry that allows us to do what we do on these kinds of deep dives.

They're still new species because I had a video camera on this dive instead of my net, so they're still waiting down there for someone to go find them.

On average, females and juveniles blow every 12.5 seconds before dives, while large males blow every 17.5 seconds before dives.

Praying over a destroyed Russian tank is funny but it carries a bitter metaphor about the Afghans and their perception of the Soviet War in Afghanistan.

There is a problem with scuba though, in that it imposes some limitations on how deep you can go, and it turns out that depth is about 200 feet.