These diagrams are included the paperback copy of Cruisers’ AA. They are NOT included in the Kindle edition due to their complexity. For ease of reading we have included them here for you to use, view, print out, whatever you wish.
At the end of the diagrams we have included some pictures that are included in the paperback version. We hope you like them.
Click on each heading below to go straight to diagram, or simply scroll through.
Dangerous and navigable semi-circles of a cyclone
This picture is based on cyclones in the southern hemisphere. (Cyclones spin clockwise in the southern hemisphere, anti-clockwise in the northern hemisphere.) Therefore, the dangerous semi-circle of a cyclone is to the right of an approaching cyclone path. This area has the strongest winds and it is the direction the cyclone is expected to move.
To evade a cyclone: In the southern hemisphere, if you are in the navigable semi-circle, keep the wind on your port quarter and manoeuvre away from the cyclone. If you are in the dangerous semi-circle, keep the wind on your port bow and try to manoeuvre away from the vortex.
Remember, no part of a cyclone is safe. It is just that in the navigable sectors you have a better chance of escaping the path of the vortex.
In the diagram above, vessels at B1, B2 and B3 have a chance to run away from the vortex. Vessels at A1, A2 and A3 are in a perilous situation: if they run they will be sucked into the vortex. Therefore, they have to keep the wind on the port bow to try to get away from the vortex. Conditions will improve, believe it or not, by A3. From here keep heading NE until the cyclone dies out. (Note from Noel: ‘Then I’d run aground somewhere, climb a tree and never go back to sea!’)
With three bearings, you may end up with a cocked hat where the three bearing lines meet (usually looks like a witch’s hat, as above. If it is not too big, mark your position in the cocked hat at the closest point to danger and have another go (in the picture it shows that position would be nearest to land. Cocked hats occur with errors (plotting, wrong identification of object, compass error incorrectly applied or unknown compass error), or this could occur with the imprecise reading of the compass or an unsteady hand when at sea.
Above we have:
Written out CDMVT with arrows alongside
We know by using CADET, when going from Compass to True we ADD EAST (ADE). So draw a line pointing from C to T and write, next to this line ‘Add East’. If you add east you must subtract west – write this on the same side.
On the other side of CDMVT, draw a line with an arrow going in the opposite direction from the first arrow on the other side.
The instructions for East and West are the exact opposite. Therefore write subtract East, add West.
Simply follow the directions.
How to do Parallel Indexing: You place a line at a chosen clearance range from the centre (your boat), parallel to your heading line and on the side where the obstruction/headland exists (using an offset EBL (electronic bearing line) or a PI (Parallel Index) line if your radar provides one). Use the VRM (variable range marker) to set the EBL/PI line at the appropriate distance and make sure you do not breach that line. (See diagram below.)
Double the angle off the bow. Figures 1 & 2.
Follow the step by step instructions in the book!
Speed, distance, time calculations
Position – Running Fix
A running fix is a fix using two bearings and it doesn’t matter how far the course line is from the bearing object, therefore it is used when you have no means of measuring the range.
See full step by step instructions in the book.
Chart symbols / chart conventions
On the chart, use the following symbols so everyone understands the workings.
Set & Drift
Current will push you in a certain direction (called ‘set’) and over a period of time, the current will move you a distance (called ‘drift’). To counteract set and drift, you need to know the speed and direction of the current. (You could do this by taking a good fix position and comparing that position to your DR position. The difference between your good fix and DR position will be the set and drift).
Finding the Course to Steer (CTS) allowing for a known current:
For full, step by step instructions, see the book.
Formula for speed, distance, time calculations
See the book for further instructions
True wind calculations
For full details, follow the instructions in the book.
Nobility Scale of Metals
World-wide radio Nets and Scheds
|Sonrisa Net||0730 hrs (PDT)||3.968 MHz||Sea of Cortez|
|Russell RadioNew Zealand||1800 hrs (NZ)1830 hrs (NZ)1900 hrs (NZ)||6.516MHz4.445 MHz4.417MHz||South Pacific|
|New Zealand Wx Net||2000 hrs (Z)||7.080||New Zealand|
|Med M/M Net||0700 hrs (Z)||7.085 MHz||Mediterranean|
|Comedy Net||2040 hrs (Z)||7.087MHz||Australia, South West Pacific(very informal – multipurpose)|
|Harry’s Net||2000 hrs (Z)||7.095 MHz||W & S Pacific|
|Baja California M/M Net||1530 hrs (Z)||7.238 MHz||Coastal Baja & California|
|Caribbean M/M Net. Saint Croix||1100 hrs (Z)||7.241 MHz||Caribbean|
|Chubasco Net||1445 hrs (Z)||7.192 MHz||Mexico West coast|
|The Namba Net||0815hrs local time Vanuatu (Z + 11)||8.101 MHz||Operates May to October, sister Net to Sheila Net|
|Radio ‘Peri-Peri’ E. Africa||0500 hrs (Z)&1500 hrs (Z)||8.101 MHz then,12.353 MHz (after weather)||Indian Ocean & South Atlantic(both times, both frequencies)|
|Caribbean Safety & Security Net||1215 hrs (Z)||8.104 MHz||Safety & Security issues in the Caribbean|
|Panama Canal Connection Net||1330 hrs (Z)||8.107 MHz||Pacific from Mexico to Galapagos, Atlantic from Belize to Colombia (emphasis on SW Caribbean)|
|Panama Pacific Net||1400 hrs(Z)||8.143 MHz (Alternatives: 8.137, 8.155,6230)||Panama to Galapagos (depending on propagation – Southern Mexico to Ecuador too)|
|Cruiseheimer’s Net||1330 hrs(Z)||8.152 MHz||US East Coast & through Eastern Caribbean|
|Sheila Net||2200 hrs (Z)||8.161 MHz||NE Australia, New Guinea, Louisiade Archipelago, Solomon Islands, Vanuatu and Noumea|
|Rag of the Air Net||1900 hrs (Z)||8.173 MHz||SW Pacific|
|Northwest Caribbean Cruisers Net||1400 hrs (Z)||8.188 MHz||Mexico to San Andres Island, Colombia|
|Coconut Breakfast Net||1730 hrs(Z)||8.188 MHz||French Polynesia|
|Coconut Breakfast Net||1830hrs (Z)||12.353 MHz||West of French Polynesia|
|Herb Hilgenberg’s Southbound II Net||1930 hrs (Z)||12.359 MHz||Atlantic & Caribbean (reaches into Pacific later in the broadcast)|
|French Net||0300 hrs(NZ)||13.940MHz||French|
|‘Le Reseau Du Capitaine’ Net Montreal, Canada. Bi-lingual operators||0700 hrsMontreal time 1830 hrs Montreal time (emergency traffic & weather)||14.118 MHz||Atlantic, Caribbean and Pacific|
|Mississauga Net||1245 hrs (Z)||14.122.5MHz||Europe, Med, Atlantic, Caribbean & Central America|
|European M/M Net (Italian and English)||2000 hrs (Z) (1900 hrs (Z) between 30/3 & 20/10)||14.297 MHz||Weather for E & N Atlantic & S Atlantic between Africa & Brazil|
|M/M Service Net||1700 hrs (Z) during winter 1600-0200 hrs (Z) in summer||14.300 MHz||Atlantic from Cape Town to Greenland, the Eastern Pacific & Gulf of Mexico|
|UK M/M Net||0800 hrs (Z)& 1800 hrs (Z)||14.303 MHz||UK, Med and Atlantic|
|Confusion Net||1900 hrs(Z)||14.305 MHz||Pacific|
|Pacific Seafarers Net||0300 hrs (Z)||14.300 MHz||Pacific (HAM)|
|Robby’s Net, Australia||1000 hrs (Z) & 2300 hrs (Z)||14.315 MHz||Australian waters|
|Tony’s NetNew Zealand||2100 hrs (Z)||14.315 MHz||South Pacific, Australia AreaHAM Net|
|Pacific Inter Island Net||0800 hrs (Z)||14.315 MHz||Micronesia to Hawaii|
|Tony’s Net, Kenya||0500 hrs(Z)||14.316 MHZ||Indian Ocean and Red Sea|
|South Africa M/M Net||0630 hrs (Z) &1130 hrs (Z)||14.316 MHz||Indian Ocean & South Atlantic|
|Arnold’s Net (South Pacific)||0400 hrs(Z)||14.318 MHz||South Pacific|
|SE Asia M/M Net||0025 hrs (Z)0055 hrs(Z)||14.323 MHz||SE Asia|
|California Hawaii Net||1600 hrs(Z)||14.340 MHz||Pacific E, NW and Hawaii|
|Manana M/M Net||1900 hrs (Z)||14.340 MHz||US West Coast to Hawaii|
|Trans Atlantic Net||1300hrs (Z)||21.400 MHz||Med, N & S Atlantic & Caribbean|
Zulu (Z) = Greenwich Mean Time
M/M= Maritime Mobile
Photos of our journey
Pictures of our journey – relating to Cruisers’ AA short stories (scroll down). There are more pictures of our travels under OUR BOOKS/OF FOREIGN BUILD – follow the links from our home page: