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Georgia Local Notice to Mariners Extracts

Posted by Claiborne Young | Posted on 01-12-2011

Below you will discover extracts the Salty Southeast Cruisers’ Net has copied from the Local Notice to Mariners, that concern Georgia waters. The choice of what to extract is based on our appraisal of news that is of primary interest to the cruising community, and should not in any way be considered a comprehensive relisting of all the information that is available in the Local Notice to Mariners’ various editions.
Also, please note that LNTM extracts are listed below in chronological order, based on publishing date.

Temporary Research Buoys in Sapelo, Doboy and Altamaha Sounds, off Georgia AICW

Posted by Larry Dorminy | Posted on 04-16-2014

Sapelo Sound - Click for Chartview

Sapelo Sound – Click for Chartview

Doboy Sound - Click for Chartview

Doboy Sound – Click for Chartview

Altamaha Sound - Click for Chartview

Altamaha Sound – Click for Chartview

Please note the reduction in available draft in channels near the temporary buoys, “Due to the equipment placed in the (3) channels, drafts will be reduced by as much as 2 feet.” Heed the warnings and stand clear of the buoys!

The Department of Marine Science at the University of Georgia will place (7) bottom mount frames with scientific equipment in (7) locations. R/V SAVANNAH will deploy the bottom mount frames and equipment. The goal is to monitor coastal water flow, temperature and salinity. Buoys will remain in place for approximately one year and serviced quarterly by R/V SAVANNAH in July, September and December 2014.
Mooring locations listed below. The moorings placed in the sounds are placed inside the trawl line and away from the ICW.
(3) Sapelo Sound moorings
White buoy with orange reflective tape “DANGER KEEP AWAY” in position 31-32-28.45N 81-12-28.7W
White buoy with orange reflective tape “DANGER KEEP AWAY” in position 31-32-13.5N 81-3-16.2W
Round Yellow Buoy in position 31-31-45.85N 80-42-36.4W
(1) Doboy Sound mooring
White buoy with orange reflective tape “DANGER KEEP AWAY” in position 31-22-35.38N 81-17-8.5W
(3) Altamaha Sound moorings
White buoy with orange reflective tape “DANGER KEEP AWAY” in position 31-19-13.7N 81-17-51.4W
White buoy with orange reflective tape “DANGER KEEP AWAY” in position 31-18.54.8N 81-11-28.25W
Round Yellow Buoy in position 31-17-41.86N 80-45-45.8W
Due to the equipment placed in the (3) channels, drafts will be reduced by as much as 2 feet. Mariners are to avoid close proximity, or any other interference of these Buoy’s. For further information contact the U.S. Coast Guard, Waterways Management Branch, MSU Savannah (912) 247-0073. UGA POC: Dr. Daniela Di Lorio
Chat 11508, 11510 LNM: 15/14

Click Here To Open A Chart View Window, Zoomed To the Location of Sapelo Sound

Click Here To Open A Chart View Window, Zoomed To the Location of Doboy Sound

Click Here To Open A Chart View Window, Zoomed To the Location of Altamaha Sound

Entrance Light Missing at Northern Entrance to Umbrella Cut – Alternate Route Bypassing St. Andrew Sound, Georgia

Posted by Larry Dorminy | Posted on 03-29-2014

Umbrella Cut – Click for Chartview

As described below, a temporary lighted aid to navigation currently marks the northern entrance to Umbrella Cut, which is an alternate AICW route designed to bypass often ROUGH St. Andrew Sound.
A westward swing takes you northbound from Mile 696 in Cumberland River through Floyd Creek, across the Satilla River and into the Little Satilla to rejoin the AICW at Mile 686 in Jekyll Sound. This is often considered the route of choice when the primary Waterway route through St. Andrew Sound is kicking up.
If southbound, do NOT confuse Umbrella Cut with Umbrella Creek where severe shoaling has occurred. More discussion of this alternate route, see

Umbrella Creek Light A5 (LLNR 37425) is destroyed. The remains of the steel pile is partially submerged and is a hazard to navigation. A TRLB, Fl Q G, 4NM is marking the remains hazardous pile. Mariners are advised to exercise extreme caution when transiting the area. Chart 11489 LNM: 12/14

Click Here To Open A Chart View Window, Zoomed To A “Navigation Alert” Position at Umbrella Cut

Offshore Towers a Hazard, South Carolina to Cape Canaveral

Posted by Larry Dorminy | Posted on 08-06-2013

This is a Local Notice to Mariners for our cruising brethren who choose to avoid shallow parts of the Ditch by going offshore. These unlighted towers are roughly 40 nautical miles off the coasts of South Carolina and Georgia, from St. Catherines Sound to Cumberland Island.

There are eight (8) offshore U.S. Navy Aircraft Towers charted as lighted. The towers are not lighted, they are no longer used, not maintained and in very poor condition. The towers pose a hazard to navigation and are slated for removal in the future.
The Positions of the (8) Towers:
31 03 00.0N, 80 26 59.4W
31 22 29.9N, 80 33 59.5W
31 13 00.1N, 80 06 59.7W
30 47 59.8N, 80 18 59.9W
30 56 30.4N, 80 44 59.7W
31 32 00.1N, 80 14 00.0W
31 49 00.4N, 80 16 29.5W
31 37 59.8N, 79 55 30.0W

Chart 11480

Shoaling in the St. Marys River, off the AICW from Statute Mile 713, 11/8/11

Posted by Claiborne Young | Posted on 11-08-2011

The St. Marys River flows into the northern tip of Cumberland Sound just north of Fernandina, FL. This reported shoaling should be of concern for anyone making a sidetrip from the Waterway to St. Marys, GA.

Mariners are advised that shoaling extends 15 yards channelward between St Marys River DBN 6 (LLNR 6805) and St Marys River DBN 8 (LLNR 6810) with minimum depth reported at 2ft MLW. Chart 11489

Click Here To Open A Chart View Window, Zoomed To A “Navigation Alert” Position at St. Marys River

Concrete Debris Along the Path of the AICW in Altamaha River (Statute Mile 657), 8/17/11

Posted by Claiborne Young | Posted on 08-17-2011

The Waterway intersects the Altamaha River at mile 656 and runs in the Altamaha until entering Buttermilk Sound at mile 660. ALL cruisers traversing this section of the AICW need to be on maximum alert for the obstruction reported below! The Cruisers’ Net is declaring a Navigational Alert for these waters and a report has been filed with the USCG!

Cruising News:
On August 2, 2011 while traveling North there was a large piece of concrete with rebar partially exposed about mid tide on the Altamaha River between daymarks 204 and 206.
Susan aboard s/v September Song

Is this new or has it been there? Is it in the channel; if so red/center/green side? Or, out-of-channel? If so, which side? Has the Coast Guard been notified? This is good info, but what’s also needed is a better description of the location in case we’re there when the tide is in. (Not that that every happens to me, tho!)
Thanks, Jim Healey

It looked like it may have been a concrete pier, it was near the middle of the channel but closer to the red. No the coast guard was not notified.
Susan aboard s/v September

Thanks very much for following up, and for the CG notification. That must be fairly new, but it sounds like a really bad hazard for the unaware! We’ve been through there many times over the years, and I’ve never seen anything in that area before. But, the area is shoal, shallow, and does not lend itself to error; looks like, favor green” is the new rule.
Actually, if the weather is right, we’ve taken to overnighting at the great Duplin River anchorage, then we go out at Doboy Sound and back in at SSI, or the St. Mary’s or St. John’s, to miss that whole Little Mud/Altamaha stretch. Too bad; we really love the salt marshes and the rural character of the area, but GA just does such a lousy job of keeping the waterway navigable! Maybe a hazard like this will get cleared before the fall migration.
Thanks, again.
Peg and Jim Healy aboard Sanctuary
Currently at Rock Creek, Pasadena, MD
Monk 36 Hull #132

As noted by Captains Jim and Peg above, SSECN Eastern Seaboard Editor, Captain Larry Dorminy, notified the USCG about the obstruction in Altamaha Sound/AICW. They replied:

Thank you for contacting the Navigation Center.
Your report concerning a hazard to navigation in the Altamaha River is currently being investigated by a USCG Aids to Navigation team. Please refer to the District 7 Local Notice to Mariners for any information regarding their findings. If deemed necessary, a Broadcast Notice to Mariners will also be issued. We thank you for your report.
We hope this addresses your inquiry. In our continuing efforts to provide high quality services to our customers, please let us know if you found the provided answer helpful.
USCG Navigation Center
Navigation Information Service
7323 Telegraph Road
Alexandria, VA 20598 – 7310
Tel: 703-313-5900

The Coast Guard received a report of a large piece of concrete with rebar partially exposed about mid tide on the Altamaha River between Altamaha Sound Daybeacons 204 and 206. Mariners are advised to avoid this area. Chart 11508

Just passed thru this area today with our 7ft draft Catalina 42. Tide was at about about +6ft. Ran directly down the center and did not hit anything or see anything. Found about 7ft MLW.
It would have been good if September Song had indicated where they saw this obstruction. In the channel? To the side of the channel? Where was it?
We have worred about this for many miles down the ICW but having faith with the heavy volumn of boats going thru hear we would have heard something by now.
Dennis Lawrence
S/V Thate Wata
Catalina 42 Mk 2 Hull # 758

I passed through here 2 days ago [March 23, 2014]. Between daymarker 208-206 there is an obstruction marked, on the west side of the channel. I was 15 minutes before low tide (+0.4). I did not see the obstruction that was marked there was significant chop due to high winds. i did not see anything between 206-204 except for a significant amount of mud bank. The depth in the channel was 7-13 ft.
Steve Lancaster

Click Here To Open A Chart View Window, Zoomed To A “Navigation Alert” Position On the AICW As It Passes Through the Altamaha River


Posted by Larry Dorminy | Posted on 06-02-2011

Do not know if this will affect any of you, but just in case…

The U.S. Air Force will be conducting tests and training operations on nationally controlled frequencies between Hunter Army Airfield and Savannah International Airport during the period of June 6-10, 2011. Reduced reception may occur that could interfere with the range of 2900-3100MHz on some USCG radar systems.
Mariners are urged to exercise caution and transit at their slowest safe speed if affected by any radar range reduction. If this reduction is noted, please contact the Coast Guard Sector Charleston on VHF radio channels 13 or 16 or by phone at (843)740-7050 immediately