This is what we know so far about the lost submarine `Titan`.

Weather of Arabia - The US and Canadian Coast Guard continue to search for a small tourist submarine that was lost with 5 people on board on a trip to visit the wreck of the "Titanic" in a remote area in the Atlantic Ocean off the coast of North America.

The search and rescue operation involves government agencies, the US and Canadian navies, and deep-sea companies. The wreckage of the Titanic rests about 700 kilometers south of St. John's near Newfoundland, while the rescue operation is being managed from Boston and Massachusetts.

It is believed that the missing submarine is the "Titan" owned by the company "Oceangate", which is the size of a truck and can accommodate five people, and is usually equipped when diving with enough oxygen on board for four days.

This is what we know so far about the lost submarine "Titan".

• The submarine was carrying 5 people, to document the wreckage of the iconic "Titanic", which sank more than a century ago.
• The submarine "Titan" was reported missing Sunday night about 700 km south of St. John's in the Canadian province of Newfoundland.
• A rescue operation began in the deep waters of the Atlantic Ocean on Monday
• It is believed that the oxygen will only last the passengers for less than 45 hours
• The submarine is small and does not have any seats and the passengers have to sit on the floor