Empathy List Archives

EB

edmond badham

Fri, Jan 16, 2015 11:03 AM

We struggle with this. The Cape Fear River is some 20 miles long from
Wilmington to the ocean with current up to more than 2 knots. Slack is
about 1.5 to 2.5 hours after high or low water. Once one gets into the ICW
the current depends on where one is in relation to an inlet and where the
inlets are in relation to each other, their relative size, and recent
rainfall. This is complicated by numerous bridges that open only on the
hour and by shoaling. It's a complex calculation. I would like to hear of a
way to calculate optimal departure time short of testing discreet departure
times which is very laborious. One could also run a constant speed if that
is possible.

Edmond Badham
COSMO
Wilmington, NC.

We struggle with this. The Cape Fear River is some 20 miles long from Wilmington to the ocean with current up to more than 2 knots. Slack is about 1.5 to 2.5 hours after high or low water. Once one gets into the ICW the current depends on where one is in relation to an inlet and where the inlets are in relation to each other, their relative size, and recent rainfall. This is complicated by numerous bridges that open only on the hour and by shoaling. It's a complex calculation. I would like to hear of a way to calculate optimal departure time short of testing discreet departure times which is very laborious. One could also run a constant speed if that is possible. Edmond Badham COSMO Wilmington, NC.

JP

joseph.pica@gmail.com

Fri, Jan 16, 2015 3:02 PM

I have had great success through this region using Nobeltec's ETT(estimated travel time) and Best departure time coupled with Tides and Currents. It has been constantly accurate (not withstanding spring tides and major wind driven tides) permitting me to travel northbound and southbound with favorable currents. My own failed efforts studying the tides a current charts were confounded by the complexity of the intervening inlets etc. .

Joe Pica
M/V Carolyn Ann GH N-37
http://carolynann-n37.blogspot.com/
MTOA#3813, AGLCA #5485

I have had great success through this region using Nobeltec's ETT(estimated travel time) and Best departure time coupled with Tides and Currents. It has been constantly accurate (not withstanding spring tides and major wind driven tides) permitting me to travel northbound and southbound with favorable currents. My own failed efforts studying the tides a current charts were confounded by the complexity of the intervening inlets etc. . Joe Pica M/V Carolyn Ann GH N-37 http://carolynann-n37.blogspot.com/ MTOA#3813, AGLCA #5485

BM

Bob McLeran

Fri, Jan 16, 2015 3:56 PM

If you want to get the best insight, talk to any tug captain plying the
ICW. They know exactly when to depart a certain area heading for another
area based on the tide state at the point of departure and speed through
the water (either NB or SB).

<><><><><><><><><><><><>Mozilla Thunderbird<><><><><><><><><><>
Bob McLeran and Judy Young Manatee Cove Marina
MV Sanderling Patrick Air Force Base
DeFever 41 Trawler Melbourne, Florida
Blog: http://mvsanderling.net/Blog
Web: http://cruising.mvsanderling.net/

On 1/16/2015 10:02 AM, joe via Trawlers-and-Trawlering wrote:

<snip> My own failed efforts studying the tides a current charts were confounded by the complexity of the intervening inlets etc. .

If you want to get the best insight, talk to any tug captain plying the ICW. They know exactly when to depart a certain area heading for another area based on the tide state at the point of departure and speed through the water (either NB or SB). <><><><><><><><><><><><>Mozilla Thunderbird<><><><><><><><><><> Bob McLeran and Judy Young Manatee Cove Marina MV Sanderling Patrick Air Force Base DeFever 41 Trawler Melbourne, Florida Blog: http://mvsanderling.net/Blog Web: http://cruising.mvsanderling.net/ On 1/16/2015 10:02 AM, joe via Trawlers-and-Trawlering wrote: > <snip> My own failed efforts studying the tides a current charts were confounded by the complexity of the intervening inlets etc. . >

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