I also discovered that the Admiralty tough charts have been discontinued...and I am gutted. they were perfect for an open dinghy and the ones I have for Plymouth and the rivers - have been well used. because they had a protected coating - you could leave them on the thwart; they'd get splashed - but you could wipe it off; you could mark them with chinagraph pencil which would rub off.............I'm gutted! I wanted the A3 booklet of charts for ports Plymouth to Falmouth....so I could start planning my summer trips....but not to be. I gather they were too expensive to print as Admiralty had to go to external printers and they didn't prove as popular as first anticipated. Personally I'd have thought they were ideal for larger offshore ribs etc.
However, I did manage to come away with the next best thing although I will need to get them protected somehow.....the Admiralty Leisure chart folio...SC 5602 The West Country edition Falmouth to Teignmouth. Now I didn't know about these but I sort of hit the jackpot because it includes the charts for all of my cruising coast including Fowey up to Lostwithiel; the Dart up to Totnes (there is another summer trip me feels); Polperro, another set of Plymouth and all rivers up to Calstock (useful to have a spare set).........at A2 size. this means I can start thinking about a trip down to Fowey in more detail. (although I still need to do loads of things before then.......see the 25th January 2011 post for details).
Also spent some of the afternoon brushing up or remembering basic navigation stuff. Nothing major - some basic revision really:
- reading latitude and longitude accurately on a chart
- plotting by range and bearing
- learning how to draw a spider's web compass rose (and how to use it)
- how to get a cocked hat position and the six rules to remember for getting one ...which are....
- getting three positively identifiable landmarks
- which are well spread around the horizon
- and closer rather than further away
- taking bearings which are changing slowest first; then take the bearings which are changing more quickly
- taking bearing of nearest objects as quickly as possible
- taking bearings of distant objects as accurately as possible
- what am I hoping to achieve?
- what are my limitations?
- what hazards might I encounter?
- what is available to help?
- what route will I take?
- weather forecast
- tidal predictions
- limitations of boat and crew
- navigational dangers
- a contingency plan(s)
- making sure straight line tracks between waypoints don't go too close to hazards
- using landmarks as aiming points rather than by steering by compass - not a problem in Arwen since I don't have a compass in her at present and reply on my hand held one, a chart and an OS map
- putting any waypoints in positions where they can be checked by eye (yeah got to look at this more closely given I programmed all waypoints in wrong last August!!!)
- plot ranges and bearing accurately between waypoints and check them once plotted in the GPS
- go too close to hazards....dur!
- re use old waypoints - re-enter them each time
- plot just one waypoint way off shore to get around a headland - plot three or four closer in (but in the case of Rame head - remember those fearsome tidal races!)