Barcelona to Seattle shipping route.

Ships leaving Barcelona for Seattle head north west and cover a sea distance of 9,102 nautical miles (16,856 km), via Panama Canal. The straight line between the ports is 8,717 km; coastlines and shipping lanes add the rest. On the way the vessel passes Strait of Gibraltar and Panama Canal, so canal transit fees and waiting time at the canal are part of every voyage.

Shipping time depends on speed. At 14 knots, a common container ship service speed, the passage takes 27.1 days at sea. Slow steaming at 12 knots stretches it to 31.6 days, while 18 knots brings it down to 21.1. Container transit time on a liner service is longer than the steaming time: ships call at other ports on the rotation, and cargo may transship at a hub. Add terminal time at Barcelona and Seattle to plan the full ocean transit time.

The next option is via Suez Canal, 13,829 nautical miles, 4,727 nm longer than the main route. Carriers pick it when Suez Canal is congested or closed.

1,970 nm of the route, 22% of it, lies inside North American ECA, US Caribbean Sea ECA and Mediterranean Sea ECA. In an emission control area ships must burn fuel with no more than 0.1% sulphur or clean the exhaust with scrubbers. That fuel costs more, and carriers add it to the ocean freight bill as a low sulphur or ECA surcharge.

Container freight rates on Barcelona to Seattle move with fuel prices, ship capacity and the season. Compare several carriers before booking: the cheapest sailing is often the slowest one. At Seattle (USSEA) carriers give about 3.94 free days before demurrage and detention charges start, so plan the truck or rail pickup before the box lands.

Of the 64 port to port routes from Barcelona in this directory, Seattle is the 54th shortest. Closer destinations include Shanghai (8,871 nm), Ningbo (8,757 nm) and Kaohsiung (8,333 nm).