The Northwest Seaport Alliance – the new entity that includes the Ports of Seattle and Tacoma – says that’s the biggest container ship ever to call in Puget Sound, the CMA CGM Callisto, which arrived at Terminal 18 today. As big as it is – see all the stats here – it’s not as big as the ships the port wants to redesign Terminal 5 to handle, which will hold up to a third more container volume than this one. The Callisto is scheduled to head back out tomorrow. Speaking of the modernization proposal – this Friday is the comment deadline for key aspects of that proposal – details are in our report from two weeks ago.