overall in length

(A) for a foreign vessel or a vessel engaged on a foreign voyage, the greater of—

(i) 96 percent of the length on a waterline at 85 percent of the least molded depth measured from the top of the keel (or on a vessel designed with a rake of keel, on a waterline parallel to the designed waterline); or

(ii) the length from the fore side of the stem to the axis of the rudder stock on that waterline; and

(B) for any other vessel, the horizontal distance of the hull between the foremost part of the stem and the aftermost part of the stern, excluding fittings and attachments.