reflag

[ree-flag]
verb (used with object), re·flagged, re·flag·ging.
  1. to register (a foreign ship) so that it flies the flag of the registering nation and thereby comes under the latter's protection.

Origin of reflag

First recorded in 1985–90
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018