(cG)  the receipts and accruals of any person who is not a resident, which are derived by such person from carrying on business as the owner or charterer of any ship or aircraft, if a similar exemption or equivalent relief is granted by the country of which such person is a resident, to any resident in respect of any tax imposed in that country on income which may be derived by such person from carrying on in such country any business as owner or charterer of any ship or aircraft;