Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Russian deep submergence rescue vehicle AS-28 -  AS-28 is a Priz-class deep-submergence rescue vehicle of the Russian Navy which entered service in 1986. It was designed for submarine rescue operations by the Lazurit design bureau in Nizhny Novgorod. It is 13.5 m (44 ft) long 5.7 m (19 ft) high and can operate up to a depth of 1000 m (3300 ft).
The answer to this question is:
Mean Of Transportation