Also be very aware that a LNM issued the first week of April (unintentionally and painfully verified by another of our members recently) warns of a submerged tree near the South Entrance Buoy #2:
WASHINGTON – STRAIT OF JUAN DE FUCA TO STRAIT OF GEORGIA – SWINOMISH CHANNEL SOUTH ENTRANCE – Submerged tree
The USCG has verified a submerged tree is in the Swinomish Channel South Entrance in the vicinity of the northeast side of Swinomish Channel South Entrance Lighted Buoy 2 (LLNR 18790). The tree was photographed at a +0.4 foot tide at approximately 48-21.6676N, 122-33.2537W. Mariners transit at the slowest safe speed, and use extreme caution.
Chart 18427 LNM: 13/14