Arkhangelsk Oblast eventually spread well beyond the Arkhangelsk Region. The Mezen horses, bred in the Mezen River valley, are rather small but suitable for difficult work and easily survive cold winters. The area of current Arkhangelsk Oblast has always been located on the trading routes connecting central Russia to the White Sea, and, in fact, in the 17th century the White Sea was the main sea export route for Russia. The whole course of the Northern Dvina is navigable, as well as the lower course of some of its tributaries, most notably the Vychegda, the Vaga, and the Pinega. The Mezen is
Port of Redwood City Sea Scout ships and one Mariner Scout (Girl Scout) ship also use the facility. Stanford University has its Stanford Rowing & Sailing Center at the port. Governor Arnold Schwarzenegger, in his 2007 state of the State of California address, unveiled a plan for emergency water transit for the San Francisco Bay Region. The plan provides for a key role for the Port of Redwood City which "is strategically located between two bridges — the Dumbarton Bridge and the San Mateo Bridge. A Redwood City ferry terminal would be a crucial link, and also serve about 1400 regular passengers a day".