The terse statement below, taken from the Local Notice to Mariners, seems to specify the addition of a new aid to navigation on the marked Manatee River entrance channel, leading from Tampa Bay. We have plotted the reported position of this new marker, and it seems to lie just north of charted, lighted marker #4.
Clearly new marker #3 has been placed to warn of shoaling along the northern flank of the Manatee River approach cut. We are establishing an SSECN Navigational Alert here until the NOAA charts begin showing this aid to navigation.
FL West Coast Tampa Bay
Shoaling has been reported – Manatee River DBN 3 (LLNR 21870) has been established in position 27-32-10.760N 082-40-08.436W to mark shoaling. Chart 11425 week 1911