Thanks for the info. Its amazing how quickly the history on some of these boats can become a tangled mess.

I believe the original Navy number and builder's number given here are incorrect. USCG documentation on this vessel show her as RTC Hull 165, originally the YOG 90. Since then she has become ALYESKA, POLAR ICE, POLAR ENTERPRISE, POLAR MIST, POLAR WIND, and finally BLUE NORTH. To confirm this, I checked the photo, and she has the anchor flush with her hull, as YOG 90 would have had, while YO 115 is the earlier version with a recessed anchor.