supply of class approved breathing apparatus self contained compressed air ( bascca ) for 250 men ferry craft ( yard 786 ) of indian navy , breathing apparatus self contained compressed air ( bascca ) [ class approved ] for sea going passenger vessel ( 250 men ferry craft ) of indian navy, yard – 786. the above said material ( bascca ) should contain the followings: 1 ) 1 litre / 200 bar cylinder for a duration of 8 ( eight ) minutes. 2 ) carry bag version with hood. 3 ) diffuser. 4 ) l. p. breathing hose. 5 ) pressure gauge valve ( approved type ) with relevant certificate. 6 ) 5 ( five ) years self life ( complete set ) .