Singapore to Seattle shipping route.

Ships leaving Singapore for Seattle head north east and cover a sea distance of 7,171 nautical miles (13,281 km), on a direct course. The straight line between the ports is 12,988 km; coastlines and shipping lanes add the rest. No canals or major straits on this leg, the ship stays close to the direct line.

Shipping time depends on speed. At 14 knots, a common container ship service speed, the passage takes 21.3 days at sea. Slow steaming at 12 knots stretches it to 24.9 days, while 18 knots brings it down to 16.6. Liner schedules on the lane quote 25 days port to port, because the services call at other ports and some transship. Over the last 30 days we counted 1 sailings by 1 carrier (CMA CGM).

548 nm of the route, 8% of it, lies inside North American 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.

Recent freight rates for SGSIN to USSEA start at $6,815 for a 20GP and $9,450 for a 40GP. These are spot market prices from carriers that sail the lane; your quote will also include terminal handling, documentation and any bunker surcharge. 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 Singapore in this directory, Seattle is the 40th shortest. Closer destinations include Algeciras (6,997 nm), Valencia (6,740 nm) and Barcelona (6,663 nm).