Overland Common Point (OCP)
A term stated on the bills of lading offering lower shipping rates to importers east of the Rockies, provided merchandise from the Far East comes in through the West Coast ports. OCP rates were established by U.S. West Coast steamship companies in conjunction with western railroads so that cargo originating or destined for the American Midwest and East would be competitive with all-water rates via the U.S. Atlantic and Gulf ports. Applies to eastern Canada.
Source: U.S. Maritime Administration.