Section 257(2)(a) in The Merchant Shipping Act, 1958
(a)if after the ship has departed or proceeded on such a voyage any additional [special trade passengers] [Substituted by Act 69 of 1976, Section 2, for " unberthed passengers" w.e.f. 1.12.1976).] are taken on board at a port or place within India appointed under this Part for the embarkation of [special trade passengers;] [Substituted by Act 69 of 1976, Section 2, for " unberthed passengers" (w.e.f. 1.12.1976).] or