Chart correction NNU-323368 — chart 259
снят · Portage Lake MTU Weather Buoy 1 · Y "1" Fl Y 5s Priv · Structure: <blank> Remark: Private Aid. Maintained from May 1 to Oct. 1.
Source: NOAA Nautical Updates — critical (US waters)
Reference information — always verify against official Notices to Mariners before navigation.