Registry of Ships Act 1787

Vessels altered in form or burthen, &c to be new registered, otherwise deemed foreign.

XXVI. And be it further enacted, That if any ship or vessel, after the shall have been registered, pursuant to the directions of this act, shall in any manner whatever be altered in form or burthen, by being lengthened or built upon, or shall be altered from a sloop to a brigantine, or from any one denomination of a vessel to another, by the mode or method of rigging or fitting, in such case such ship or vessel shall be registered de novo, in manner herein required, as soon as the returns to the port to which the belongs, or to any other port in which the may be legally registered by virtue of this act, on failure whereof, such ship or vessel shall, to all intents and purposes, be considered, and deemed, and taken to be a foreign ship or vessel.