Section 7 in The Merchant Shipping (Registration Of Sailing Vessels) Rules, 1960
7. Painting of name and official number on vessel.
(1)The code letters indicating the port of registry, the name of the vessel by which it is registered and the official number assigned to it under rule 5 shall be painted-in white oil colour against a black background on both quarters of the vessel near the stern.(2)All letters and figures painted shall be of such size as the registrar may determine in each case but shall not be less than one decimetre in height and two centimetres in width.(3)The letters and figures referred to in this rule shall also be painted in suitable size on the dinghies attached to the vessel.
