Section 58(4)(a) in Bihar Inland Vessels Rules, 2013
(a)The forward extremity of the space available of the space for the passenger accommodation shall be determined for passenger accommodation shall be determined as above for above foe open for open launches, and the clear area of this space is to be obtained by deducting all encumbrances such as skylights, companions, machinery casings, navigating spaces, life boats and ventilator.