4. In this Act, unless there is something repugnant in the subject or context,- (1) “explosive” (a) means gunpowder, nitro-glycerine, dynamite, gun-cotton, blasting powders, fulminate of mercury or of other metals, coloured fires and every other substance, whether similar to those above-mentioned or not, used or manufactured with a view to produce a practical effect by explosion, or a pyrotechnic effect; and (b) includes fog-signals, fireworks, fuses, rockets, percussion-caps, detonators, cartridges, ammuni-tion of all descriptions, and every adaptation or preparation of an explosive as above defined: (2) “Manufacture” includes the process of dividing into its component parts, or otherwise breaking up or unmaking, any explosive, or making fit for use any damaged explosive, and the process of re-making, altering or repairing any explosive: (3) “vessel” includes every ship, boat and other vessel used in navigation, whether propelled by oars or otherwise: (4) “carriage” includes any carriage, wagon, cart, truck, vehicle or other means of conveying goods, or passengers by land, in whatever manner the same may be propelled: (5) “master” includes every person (except a pilot or harbourmaster) having for the time being command or charge of a vessel: provided that, in reference to any boat belonging to a ship, “master” shall mean the master of the ship: (6) “import” means to bring into Bangladesh by ¹[air, sea] or land. ²[* * *]