MangoandMe

14 December 2012
30 June 2012 | ASCENSION ISLAND
30 June 2012 | ASCENSION ISLAND
04 June 2012
28 May 2012 | St Helena, South Atlantic Ocean
28 May 2012 | St Helena, South Atlantic Ocean
25 May 2012 | Riviera Beach, Florida
23 May 2012 | Riviera Marina, Riviera Beach FL
23 May 2012 | Riviera Beach Marina, Riviera Beach, Florida
19 May 2012 | En route to Riviera Beach, Florida
18 May 2012 | En route to Riviera Beach, Florida
17 May 2012 | En route to Riviera Beach, Florida
16 May 2012 | En route to Riviera Beach, Florida
15 May 2012 | En route to Riviera Beach, Florida
14 May 2012 | En route to Florida
13 May 2012 | Destination:Riviera Beach Marina, Riviera Beach, Florida
12 May 2012 | Destination:Florida
11 May 2012 | On the way to the Caribbean

FROM THEORY TO PRACTICE - NAVIGATION TO THE COAST

14 November 2011 | closing in on S Africa
david
With less than 500 miles to go to Durban S Africa this is what is uppermost on my mind. As the weather there can and does change from one 12 hour period to the next, and as the weather forecasts become more accurate the closer we get, we can begin to project Shearwater's position with ever increasing accuracy.

I am now drawing a line from the boat to 30 miles NE of Durban. Im doing this because of that famous 20-30 mile strip barely 50 miles from shore where the current runs south from 2-5 knots. By following this line we will offset that drift south. On the bigger map, the concern is the general current that pulls south in this whole area-much slower but, in a 24 hour period, it can put one in an untenable position too far south. Hence one has to constantly 'crab' north to counter this.

Winds,in the next few days, are predicted to be more healthy, in the 10-15 range. With this increase Im now projecting arrival in Durban Friday into Saturday. However we are getting off to a slow start as this whole night(Monday) the winds are coming out of the west...directly on my nose....means slow progress once again.

As one's actual arrival time can now be predicted with greater accuracy, of utmost importance (and a sleep robbing obsession) becomes the famous Agulhas Current, that same 20-30 mile strip mentioned above. One simply must NOT cross it when a southwest wind blows. Current flowing south against wind blowing north = steep waves. With a SWest wind at 15 it is apparently very uncomfortable. With 20-25 knots it is dangerous. With 25-35+ it can be catastrophic.

And lastly, being single handed, entering a harbor at night is, as Ive said before, not a good idea. So, added to all the other considerations is trying to time it for a day entrance. If not, this one time, I might enter in the dark.

So those are the navigational challenges ahead. Obviously I have never done this notorious leg before so all this has now to go from theory to practice.
Comments
Vessel Name: Shearwater
Vessel Make/Model: CONSER 47 Racer/Cruiser Catamaran
Hailing Port: West Palm Beach Florida
Crew: MANGO AND ME
About:
Mango is a smart, funny, sensitive and totally unique wheaton/sheepdog. . He is my partner on this patently undoglike voyage but remains cheerful about the whole affair. [...]
Extra: Shearwater is a 47 foot, very sleek and light catamaran. She is part of a fleet of 11 that were built - its a sister ship of Shearwater that holds the unofficial speed record. 31 knots! Of the this fleet, only one has flipped...so we are on the side of good odds!
Shearwater's Photos - Main
Lesley, Kelly, John, Karol and David successfully transit the canal....a few misc shots
27 Photos
Created 13 March 2010
2 Photos
Created 12 June 2009

Who: MANGO AND ME
Port: West Palm Beach Florida