(Photo added 5:08 pm; by WSB co-publisher Patrick Sand)
3:49 PM: If you’ve noticed a big emergency response headed toward Harbor Avenue – it’s for a powerboat reported to be taking on water off Jack Block Park. Some of the responders have already been canceled, but others are continuing on. More as we get it.
3:55 PM UPDATE: Via scanner, the boat’s now been assessed as a 1960s-vintage wood boat, about 22 feet long, nobody on board, and they’re trying to figure out if it’s a “derelict vessel.” The fireboat Chief Seattle is on scene, per MarineTraffic.com; we have a crew headed that way. Scanner also indicates this is likely abandoned and the boat will be impounded if possible; the fireboat’s crew is reported to be doing a “stability survey.”