Nav systems to get North on?

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Dunedinite
Dunedinite
WA
184 posts
WA, 184 posts
17 Jun 2010 7:09pm
I'm planning to sail from WA to Indo next year. With so many chartplotters and digital charts out there, which system to use?
Some advice or suggestions please. So far I'm thinking Raymarine chartplotter with c-maps, Furuno sounder and max-sea back-up on the Laptop.
Even if you just put down what you have I can get some votes...

Thanks
Q.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
18 Jun 2010 8:32am

It would be a good idea not to rely on Google or responses from dick wits on internet forums either.




On my fishing vessel in the avatar I use a Pentium 3 desktop computer running "Seaclear2" software and digital admiralty charts. Lcd 19 inch screen. 23 channel gps puck.

Seaclear is a free programme and there is also an excellent forum to support it as well. Plenty of expensive programmes and charts about but they are no better and in some cases inferior to Seaclear.

The only paper chart I have onboard is mounted in a picture frame on the bulkhead to satisfy survey requirements.

For my yacht I have an old Toshiba laptop loaded with Seaclear, 16 channel puck plus a Garmin handheld.
dralyagmas
dralyagmas
SA
380 posts
SA, 380 posts
18 Jun 2010 9:59am
Does Seaclear allow use of vector charts? Either Cmap Max or Navionics?

There is another very similar thread about this so check that out
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
18 Jun 2010 6:11pm
dralyagmas said...

Does Seaclear allow use of vector charts? Either Cmap Max or Navionics?

There is another very similar thread about this so check that out


Only real charts. Either scanned paper charts or digital versions of charts from the hydra-graphic office [navy admiralty]. The C-map etc are bought under license from the same crowd but with out the embedded detail. Lot of the stuff is not visual until you expand. Scanned charts are fine as long as the paper chart is still stable that your copying from. The only disadvantage is when fully expanded the texture of the paper is visible. Digital is crystal clear at any expansion.

Being a software programme you can do pretty much anything to it. Download and calibrate Google earth. Use a picture programme to make charts and calibrate from whatever you like.
My "work" chart is a digital army survey map that shows the depths as gradient lines, the marine charts with the depths as numerals clutter up the screen too much when fully expanded.

After using Seaclear for about 8 years I'm a bit spoilt. Previously I used a Seiwa 12 inch plotter with C-map. Now I reckon 17 inch is about the minimum size.

I have just sold my business in the last couple of days so will be spending more time in the leisure side of boating. My use of chartplotting will change slightly.

The ideal plotter I reckon would be a 22 in LCD mounted at the nav station. Set up so its visual from the cockpit and rotate to be used as a TV in the saloon. But that's just me.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
19 Jun 2010 7:30pm
cisco said...


The wheelhouse of a fishing boat is one thing, and the cockpit of a yacht is a different thing.

Do you see an outstanding advantage of one system over the other?

And, what do you think is the best scource for digital raster charts, even if they do cost some money?

Cheers Cisco, (the dick wit on the internet forum)



The 23 channel puck cost $72. The pentium 3 computor, ex police fraud squad was $200 but the same one is now $100. The Lcd screen was about $200. Refurbished Logitech track ball $36. Total cost was about the same as a repair bill for the old Seiwa 12. The track ball is a vital component of the whole unit, its screwed in place on the dash. I have an old chart plotter in the cabin as back up.
The laptop cost $100 complete with a leather bag and power adapters. Holux puck was $27.
The smart people have moved onto daylight touch screens in the cockpit, the sort of thing that's used on forklifts. You have probably seen them around, they are just a thicker LCD screen with all the computer guts in the back. I think the screens are 12 in.
The LCD screen on my boat is clearly visible from the side deck where I work that why I mentioned previously about a large screen in the yacht cabin and control it by a handheld "Mouse" in the cockpit. Of course when your typing names or whatever onto charts you have to be at the keyboard.
The charts I use are available from the hydrographic office for about $550. File swapping is rife I believe, and who knows where these charts end up. Seaclear is a computer programme and there are Seaclear enthusiast around the world sharing files. I can load stuff off my computer onto a thumb drive and transfer it to the fishing boat tied up next to me. I modify digital charts at home then take them down to the wharf on a thumb drive.
Only six fishing vessels left here at the main wharf, 3 use Seaclear, 2 use expensive computer programmes and one has a plotter.
As far as what's better its a matter of choice. People should be a where that with plotters that all the detail is not always visible till the picture is expanded. Storage of waypoints is limited with plotters, trawlers easily run out. With a hard drive they are virtually unlimited. Laptops can have a power consumption problem but this is less now if you use an Atom processor. These are usually only about 10 in screen so your back in plotter territory.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
20 Jun 2010 8:48am
cisco said...


No doubt pros and cons with both systems and we should probably assume that we are going to have a laptop aboard anyway but for navigation, both systems need to be seriously considered.

The Garmin or any other brand, dedicated unit, is designed and built to withstand conditions in an open cockpit. A similarly built laptop is likely to cost $3,000+.




One thing I forgot to mention is weather gribs. If you want to download these you need a laptop anyway. Laptops, brand new on eBay with Wifi, 15.5 in screens and a 100 times the computing power required to operate Seaclear are $499. Add a couple of hundred dollars for AIS and a hand-held Garmin and your set.

My old laptop is a Toshiba Tectra running windows 98. It has very little memory and it makes changing charts a few seconds longer. Some of these old machines will run direct off 12v batteries if the internal battery is removed.
maxm
maxm
NSW
864 posts
NSW, 864 posts
20 Jun 2010 10:52am
As well as the common laptops, also have a look at the newer style netbooks. They're similar to the laptop but usually have no CD/DVD drive. They're also cheaper, a bit smaller, lighter and (most importantly on a yacht) seem to be less power hungry. My missus has a Lenovo one which she loves and it runs an age on batteries alone. The biggest problem would be the smaller screen size.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
20 Jun 2010 6:18pm
cisco said...

What is the coverage of the $550 digital chart package you got from the hydrographic service and can it only be bought direct from them or through chart agents as well. Cheers Cisco.


You definitely must have been a pussers tiffy. I did not say I paid $550 for them. They cover most of the eastern sea board and SA.

The old Toshiba of mine has 8 gb hard drive and 256 of memory. More memory would help the automatic change of charts quicker.

groups.yahoo.com/neo/groups/seaclear_mapping/info Is the forum set up for Seaclear users. I'm Ramona there too. Olle the author of Seaclear is regular and often helps out. Most of the problems discussed usually entail the set up of comms ports etc.

One of the listers has written an instruction manual for about $28. The manual Olle wrote does not translate from Dutch to English very well.
Dunedinite
Dunedinite
WA
184 posts
WA, 184 posts
20 Jun 2010 7:17pm
Thanks for the info guys.
I'll try out Seaclear for a bit.
Cisco, about to purchase a steel Roberts 38, the wife is a hottie, we're gonna leave in March-April and we doing it on a budget.
Over the next few months I'lle post some snaps and updates.

I'm usually in the wind-surfing forums but will be crossing over more. But the surfboards and sailing gear is coming with us.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
21 Jun 2010 8:37am
cisco said...

Speaking of pussers, HMAS Bundaberg is in Bundaberg for the weekend and had an open day today. How could I not go to it when one of the old A-Boats is moored in the background. "Aware" I think.

We certainly give them some fancy toys to play with these days. The crew were very pleasant and all seemed to be happy in the service. No cuppa tea and bickys though.




I spent 14 years flying in Grumman Trackers and live fairly close to Albatross so I get the occasional visit. Several of my friends are still serving in their 60's! The general run of the mill sailor these days is a different animal though, seem nerdy to me. We probably would not survive the new navy's attitude to drinking etc. The random breath testing is a bit of a worry.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
21 Jun 2010 6:32pm
cisco said...

It is very much a young man's navy today I think. How anybody could serve into their 60's is beyond me. We used to call anybody over 40 a dunrooter.

I saw the alcohol warning notice in the passageway. I suppose they run completely dry ships today. You can't really knock it but it does take a bit of the fun out of it.


Actually you would be surprised at the age of sailors. The enlistment cut off is now 57. Plenty of sailors out there in their 60's. The navy is actively chasing down ex navy people to get them to re enlist. Lot of them re join as full time reservists at $250 a day tax free. Plenty sign on till 65 and then after that they have to sign on for two year stints. Its all dependant on how much they want you.

I think they still have beer issues. The breath testing is in working hours .002.
frant
frant
VIC
1230 posts
VIC, 1230 posts
23 Jun 2010 2:50pm
Anyone know anything about Navionics charts. I have Navionics Gold CF type chip for Australian waters which I run on a Geonav plotter. There is a big CAUTION on the packaging which says that if you insert the Chip into a pc card reader attempting to backup or write files to it you will render the card useless.
You need to buy NaviPlanner which includes a multi card reader for PC based route management, this Does Not enable your pc to act as a chartplotter. (approx $250)
Can I use a standard cardreader with the Navionics charts and Seaclear to operate a PC based plotter without compromising the integrity of the chip. (providing I dont try to save data to the chip.)
I would consider buying the NaviPlanner pack if it would enable the chip to be used in Seaclear if a standard cardreader is not suitable.
dralyagmas
dralyagmas
SA
380 posts
SA, 380 posts
23 Jun 2010 3:01pm
Standard card reader is no good. Navionics and Cmap both put security on the card so you hav to buy the card reader too. Cmap card reader is **** as is their support.

Using a normal card reader won't render you card useless but it won't work either.

If anyone has any tricks to get around this and I am all ears
NightCap
NightCap
NSW
25 posts
NSW, 25 posts
23 Jun 2010 10:11pm
cisco said...

CaddET, Red over Red means the Captain is dead, ROTRFPOCAS




Am i the only sailor that just uses paper charts & a fix from a basic GPS showing lat' & long' coordinates to navigate?
cisco, your first reply had me thinking i wasnt alone, but subsequant electronic mumbo jumbo replies had my eyes glazing over...(btw what does your quote above stand for?,cheers)

Paper Nav' on a small yacht is challenging with the main problem being keeping paper charts dry & trying to not trash them.(anyone got any tips to keep them dry??)

The dinette table on my Top Hat 25 pulls out to handily extend into a good sized chart table. Still parallel rules are a waste of time on a small yacht a Bi-Rola chart protracter is fantastic.

I hope i dont need to drag myself into the 20th century let alone the 21st just yet.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
24 Jun 2010 8:53am
NightCap said...

cisco said...

CaddET, Red over Red means the Captain is dead, ROTRFPOCAS






Paper Nav' on a small yacht is challenging with the main problem being keeping paper charts dry & trying to not trash them.(anyone got any tips to keep them dry??)

The dinette table on my Top Hat 25 pulls out to handily extend into a good sized chart table. Still parallel rules are a waste of time on a small yacht a Bi-Rola chart protracter is fantastic.

I hope i dont need to drag myself into the 20th century let alone the 21st just yet.



Paper charts are fine. The only problem is when you go to use them. Moisture in the air before you even get to your boat is enough to distort the paper. You have probably got to fold the charts to suit a Top Hat chart table anyway. Then your probably going to damage them with a pencil followed by a rubber, divider points etc.
I would suggest taking a new chart to a library or any place that has a large base scanner. Run off a few copies then carefully roll up the chart and return it to a cool, dry safe storage.
For navigation I would suggest a protractor as used for air navigation, when not in use it will slip into a holder and prevent it getting airborne in the cabin on a rough day. You might have to dodge the dividers too. Use a Dalton computer to calculate current/wind/drift vectors to cut down on the drawing on paper. Or you could just use a simple GPS plotter that does all the calculations for you, your plotting positions direct off a GPS anyway. If you were doing sun run sun sights or even using a hand help compass and calculating variation and deviation before applying to your unstable chart then I could understand wanting to burden your self with paper charts.
frant
frant
VIC
1230 posts
VIC, 1230 posts
24 Jun 2010 4:28pm
NightCap said...

cisco said...

CaddET, Red over Red means the Captain is dead, ROTRFPOCAS




Am i the only sailor that just uses paper charts & a fix from a basic GPS showing lat' & long' coordinates to navigate?
cisco, your first reply had me thinking i wasnt alone, but subsequant electronic mumbo jumbo replies had my eyes glazing over...(btw what does your quote above stand for?,cheers)

Paper Nav' on a small yacht is challenging with the main problem being keeping paper charts dry & trying to not trash them.(anyone got any tips to keep them dry??)

The dinette table on my Top Hat 25 pulls out to handily extend into a good sized chart table. Still parallel rules are a waste of time on a small yacht a Bi-Rola chart protracter is fantastic.

I hope i dont need to drag myself into the 20th century let alone the 21st just yet.


I think it all depends on your philosophy of navigation. Mine is pretty laidback, I am never concerned as to my actual location on a chart. My only concern is the "relative" location of other , mainly very hard, inanimate objects. I am then only comfortable when I can eyeball the said inanimate object and navigate by pure D.R. around them, using amongst other things a chart/electronic chart itself as guidance. My most important navigation tool is a good pair of binocculars. As far as paper charts are concerned it is much easier to get a global view of landmarks and inanimate objects that may be in your path cf a tiny little non daylight view screen. Sitting on deck with paper it becomes much easier to identify landmarks and take a few bearings giving you a position from which you can locate that which you wish to avoid. However it is a hell of a lot easier with a chart plotter showing your GPS location to get an exact location of the next hazard. All you have to do then is keep your eyes open and make an early visual on your inanimate objects. I am led to believe that many people however use a chartplotter and GPS as an absolute method. ie if the boat plot is in a "safe "position then everything is OK irrespective of the FACT that there can be errors in both the boat plot position and the chart itself. A further trap is the use of the location of a navigation marker as a waypoint in route selection, when every other man and his dog use the same waypoint you can have convergence of multiple vessels with nobody on watch all on collision course with the same marker.
So reckon go with a plotter but use your brain and eyes, it is after all 2010.
nswsailor
nswsailor
NSW
1458 posts
NSW, 1458 posts
25 Jun 2010 10:33am
Now when the powers all gone I use my Crawford's, in fact I actually use it for plotting. A lot easier on a Top Hat table.

Crawford's 2 books (Nos 2 & 3) of chart covers from around Crowdy Head down to Jervis Bay. The books are spray proof!

I spoke to him (Crawford) some time ago and he is trying to get his publisher to do book 4 which will take the books around to Melbourne. He has books planned for the complete coast of Australia but needs the sailing comunity to send in leters of suppport. I will get his address next time I go out to my yacht SEAKA.

nswsailor

PS I still use a GPS to get my location!
Dunedinite
Dunedinite
WA
184 posts
WA, 184 posts
25 Jun 2010 7:28pm
NightCap said...

cisco said...

CaddET, Red over Red means the Captain is dead, ROTRFPOCAS


Am i the only sailor that just uses paper charts & a fix from a basic GPS showing lat' & long' coordinates to navigate?
cisco, your first reply had me thinking i wasnt alone, but subsequant electronic mumbo jumbo replies had my eyes glazing over...(btw what does your quote above stand for?,cheers)




I'm using paper charts and my brain to sail around Perth right now. I needed both to get my commercial skippers ticket. But my wife hasn't so I'd like a modern, simple system that we can each use in the future.
Dragging yourself into the future is like saying the horse and cart is still better??
There are many reasons why people want different systems.
In an emergency any teenager could use a mouse and work out where they are on a computer chart, but they would be hopeless with a real chart.
Please keep the advice coming!
djarrak
djarrak
13 posts
13 posts
17 Jul 2010 5:11pm
Dune, paper charts are able to withstand immersion & still be useable, facsimilies fall apart if damp. Use 2B pencils. Lamination is a wate of money and of no practical use.
I cannot comment on electronic plotters, but I agree with all experts and victims of electrical failure and fire, when they say that paper charts are essential.

If you have time to do coastal and celestial navigation courses, do them. GPS is the way to go to get your estimated position, but dont expect it to be always accurate.
If you decide to go to the modern extreme and monitor your GPS data with astro nav, which is easy using a sextant, nav computer and digital watch, you will, I'm sure, derive a sense of certainty and competence that will greatly reduce your stress levels.
If you are a westralian, I'm sure you've heard the saying that 'she's a beautiful coast, but she's a bitch', that's true, but with GPS and prudent navigaion, she's a delight.
Ramona
Ramona
NSW
7757 posts
NSW, 7757 posts
18 Jul 2010 8:45am
djarrak said...



If you have time to do coastal and celestial navigation courses, do them. GPS is the way to go to get your estimated position, but dont expect it to be always accurate.
If you decide to go to the modern extreme and monitor your GPS data with astro nav, which is easy using a sextant, nav computer and digital watch, you will, I'm sure, derive a sense of certainty and competence that will greatly reduce your stress levels.



I think you may have this the wrong way around. The stress is from correct timing/fix, then reduction tables, plotting a cocked hat, getting a position some where near where you are. Or you could use a cheap 48 channel gps and know with in 100 metres where you are. Have a back up battery operated handheld in the chart table drawer.

Not sure how hanging on while trying to get a shot with a sextant can be satisfying, especially while sailing single handed.
overtheseas
overtheseas
WA
13 posts
WA, 13 posts
23 Jul 2010 8:22am
So very glad that the tecno nerds are being challenged with the pleasures of simple navigation. I sailed around the world in my 32 footer several years ago using simple sextant work, a good timepiece and basic commonsense. My most valued electronic bit of kit was a good digital depth sounder. For older coastlines like West australia's you can simply travel along a constant isobath- like say 20metres. It will keep you a constant distance off shore. I am a paper chart fan. Some places I went to I couldn't get the authorised version so I would borrow charts and photocpy them onto A4 and stick them together with cellotape- left some interesting holes! Bahama reefs can be so predictable. Yes they get wet and turn to garden mulch, but mostly you are not returning to that area so just dice them. I have to recount to you the occasion of the american yacht leaving Atutaki the same time as me. Real fancy yacht with a couple aboard- he the skipper she the boss! Atutaki is a growing reef atoll and from the entrance out to the west north west the reef had been growing appreciably. well off we went and I could see them starting to cut the corner so I called them on the VHF to warn them. He replied that it was okay because the missus was below watching the chart plotter and the track indicated that they were well clear. a few minutes later they were 400metres away and looked to me they were right on top of the reef. I called again. a few moments later they were on the reef. My little boat couldn't pull them off and in a few days the boat was a write off.
Final comment- charts are made for navigators who are good at what they do- keep off the hard stuff. When a surveyor puts a litttle + sign on the chart it doesn't mean "go to this spot because you will get great diving, fishing, scenery in this spot" it means "stay away, there are hazards here".
Ok last one now. all US charts have a gret little adage at teh top centre which I always quote when teaching celestial nav. "The prudent navigator does not rely upon one source of information."
worth thinking on.
djarrak
djarrak
13 posts
13 posts
30 Jul 2010 5:50pm
I have 3 GPS sets on board. One in the cockpit, 1 at the nav. station and a handheld that hasn't seen much more than regular battery changes for a few years. These provide satisfactory, albeit usually different, data for reasonably safe navigation. I also have a sextant and the necessary ancillary bits and bobs. I have a hand bearing compass, a depth sounder and a leadline if that fails.
It really is not so difficult to take reliable astro sights in a small boat and use them to find your EP. It is in fact so confidence building, once you realise how easy it is, that it can make the difference between going nowhere and pursuing your dream.
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