N.J. Stat. § 46:28-3: Exceptions to sections 46:28-1 and 46:28-2

Neither section 46:28-1 nor section 46:28-2 of this title shall apply to any vessel, rolling stock of railroads, or to any chattels which, in the ordinary use thereof at the time of the execution of a mortgage thereof are, from time to time, taken out of the county wherein they were when so mortgaged.