ORIGINAL REPORT, 9:19 PM SATURDAY: Remember six years ago, when the bulbous SBX was a floating fixture here for a few months? Tonight, another missile-defense radar vessel is visiting West Seattle – the SS Pacific Tracker. It and the SBX are both featured in this 2014 roundup of “The Wild Radar Ships That Make Missile Defense Possible.” Thanks to Paul Nicholson for today’s tip and photo; the Northwest Seaport Alliance schedule shows the Pacific Tracker scheduled to be in port in Seattle until Monday; MarineTraffic.com shows it berthed right now at Terminal 5. MT also shows it came here from Honolulu; it and another missile-defense ship were reported to be there last month “after participating in a first-of-its-kind test intercept of an intercontinental ballistic missile target high over the Pacific on May 30.”

MONDAY UPDATE: Port spokesperson Peter McGraw tells us it’ll be here about a week: “It’s taking on some provisions for the crew, fuel and water. It may have some light maintenance performed, as well.”