(a) General requirements. Baggage or other merchandise carried on a vehicle or on a vessel of less than 5 net tons arriving otherwise than by sea from Canada or Mexico shall be listed on a manifest as prescribed by Sec. 123.4. Vessels which are required to make entry under Sec. 4.3 of this chapter because they are arriving by sea or are 5 net tons or over shall have manifests on board as provided in Sec. 4.7(a) of this chapter.
(b) Exception where in possession of traveler. When baggage arrives in the actual possession of a traveler, his declaration will be accepted in lieu of a manifest. Merchandise imported by a person otherwise than in a vessel or vehicle need not be covered by a manifest but shall be presented for inspection, and entry shall be made in accordance with the applicable laws and regulations.