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ContinuousWave: The Whaler GAM or General Area
posted 11-13-2000 05:44 PM ET (US)
Anyone know of an economical source of nautical charts? Especially interested in the East Coast Intracoastal Waterway. The individual charts are $15-22 most places and the complete book of charts is around$100. Seems they would be on the net, but I haven't found them. Thanks.
posted 11-13-2000 09:13 PM ET (US)
I personally like the NOAA charts, send for their free catalog at 1-800-638-8972;
ask for Catalog #1 Charts & Publications. Another source for waterproof charts is
NOAA charts are updated online btw; peace of mind..........
posted 11-14-2000 05:57 AM ET (US)
The MapTech ICW chart book collection of NOAA charts isn't discounted anywhere more than $10 bucks or so --- buy it where ever and you don't have to feel you paid to much --- now if you want a cruising guide set up like a AAA tip tic thingie the best by far is ICW Chartbook Third Edition by John and Leslie Kettlewell -- Norfolk to Miami -- this one you can get at Amazon.com discounted --
Now if your serious about doing the entire trip or even long segments you need both of the above and very helpful is a GPS unit with a build in world background map used in conjunction with the above chart books --- Z
PS We used all three this past Spring coming up from Daytona FL to the Delaware Bay NJ --
posted 11-14-2000 09:12 AM ET (US)
Thanks for the info guys!
posted 11-14-2000 09:23 AM ET (US)
Since you have made the trip on the ICW, you passed right by my house. I live on the ICW (Coosaw River) in Beaufort,SC. Having boated only local waters and inland lakes, I want to broaden my horizons with 1 to 5 day trips aboard the Montauk, probably venturing into NC and FLA waters. Would appreciate any advice or tips you could give.
I have added a compass, tool kit, depth-finder, dual battery set-up, and 4hp kicker to the Montauk. I'm a little concerned about distance between re-fueling stops. I have a 27 gal fibreglass tank under the seat and should get about 4mpg with the Yamaha 90. Should I attempt to carry extra 6 gal tanks?
What's the best way to get information on the location and hours of operation of fuel sources?
I have a Horizon HX350S handheld VHF and am considering GPS (which I know nothing about).
Recommendations on GPS units?
Also,I don't plan to sleep on the boat. How should I go about finding marinas or towns with sleeping accomadation on-site or within walking distance of docking?
posted 11-14-2000 10:32 AM ET (US)
A chartplotter GPS makes navigation MUCH
easier, though I'd still recommend having
paper charts too.
I have a Garmin 162. You can get nautical
The downside is that they don't have bottom
You can see what the charts look like at
posted 11-14-2000 11:15 AM ET (US)
A good source of maps and navigational project information is the Army Corps of Engineers.
Great maps of the Mississippi and Arkansas rivers. Don
posted 11-14-2000 11:25 AM ET (US)
Yep came up the Beaufort river, then we entered the Coosaw just after Brickyard Point if I remember correctly --- about 8 -10 miles on it to the Ashwgoo (sp) Coosaw cut off ----
That main bridge at Beauport Rt 21, we got to that narrow area about noon on I think the Saturday before Memorial day, and it was jammed packed looked like and was like an amusement park dodge'm ride boats all over the place --- yikes --- heh heh
Lowrance/Eagle --- if you can locate either one of these large handhelds Eagle AccuMap 12 which is still in the Eagle current line or Lowrance GlobalMap Sport either used or NOS is a great buy, both with map features and 12 satellite receivers --- fully waterproof
Join Sea Tow, have a good waterproof full sized VHF, make sure you carry at least three fenders, two anchors small lunch type and a full sized one for your Whale, dock lines at least 4-6 at 20' min. length ---- would purchase a couple of SeaLine or equivalent (Cabala's) dry bags for clothes, sleeping bags, etc ---- 5 gallon fresh water jug, spare prop and cotter pins etc., and yes a spare 6 gallon fuel container plus extra oil --- would get one of those battery booster portable things and or carry a spare battery w/jumpers (take jumpers regardless) then all CG required stuff --- just figure your on a water camping trip --- a cell phone comes in handy at times ---
The most important thing is to have your trip well planned --- get each segment laid out and then add contingency plans just in case the weather goes haywire or you have mechanical problems ---
PS if you don't have a dodger for your Montauk would get it!
posted 11-14-2000 01:28 PM ET (US)
Thanks dgp, Chuck, and especially you Tom for the thorough reply----every bit of it useful information! I'm going to start with a simple overnighter from Beaufort to Georgetown SC. There's a nice Hampton Inn right there by the Georgetown Landing Marina.
Kind of a shakedown cruise to show me what I would have forgotten on the weeklong trip.
Thanks again for the great response.
posted 11-14-2000 02:04 PM ET (US)
That's not a bad stretch just remember north of you to Charleston the services can be few and far between and again north of Charlestown all the way to Winyah Bay into Georgetown --- give yourself plenty of time --- lots of areas you have to keep your speed down ---
When we entered Winyah Bay about 1/2 way up to G'town --- stopped by a Sheriffs patrol safety check --- surprised to see a NJ boat the size of our 27 cruising north on the ICW --- nice guys --- older boat but brand new Optimax 150's --- said they missed their old Yamaha's -- Tom
posted 11-14-2000 06:28 PM ET (US)
> http://www.garmin.com/products/gpsmap175/ > handheld unit GPS, w/map
nice unit fully waterproof
The UNIT is waterproof, the battery pack is
posted 11-15-2000 03:59 PM ET (US)
Chuck I didn't realize the battery pack wasn't "waterproof" --- guess who cares if you dunk the thing the batteries would or should be replaced anyway --- that aside it still is a nice large screen "handheld" unit which on a Montauk and for the cruising that Joe intends to do is waterproof enough to be left out in a shower or some spray without having to worry about it --- and the plus it uses Navionics cartridges in addition to the G-maps ---- just about all of the better chart cartridges are in the 100 buck range ---- with the 162 your stuck with Garmin's do it yourself map programming and or the built in world map back ground map --- now the Lowrance/Eagle units not only can take advantage of Lowrance map do it yourself create software but also one can use the IMS map cartridges which are offered through Lowrance ($ 50 each at Cabala's) or C-maps
Aside from the above I don't recommend any particular one --- if would be up to the person to determine his/her own need --- either a large handheld map unit --- a small hard to read hand unit fine for land based travel I guess, a fixed mount larger combo unit like you have ---- or as we use the Lowrance GM 2000 chartplotter unit which you have to add all components (GPS, DGPS, Sonar, and Cartridge Reader/s) in our case we have the 2000 set up with GPS, DGPS and reader --- and use an Interphase Advantage dual frequency sonar unit ----
Again thanks for the warning on the Garmin battery pack will qualify it when I suggest it to someone --- Z
posted 11-15-2000 05:27 PM ET (US)
Tom: I have the Lowrance GlobalMap 100, I think. Gonna go rambling and find it. I have the Lowrance CD and do-it-yourself stuff. Haven't spent much time with it, but not exceedingly user friendly, to my lights. Is this other stuff you mention compatible with my unit? I'm not sure I have a recepticle for plugging cartridges? Also, I believe my specific unit isn't waterproof. The keys project through a template with no membrane covering. Regs, TL
posted 11-15-2000 06:07 PM ET (US)
I looked at the Garmin chartplotters at West Marine today—The 162 & 180. They had a knowledgeable sales person who ran me through some different units. West Marine is nice because they have the units set up and you can play around with them to see which one works best for you. The sales rep tried to steer me towards the Lowrance/Eagle as they are good values, packed full of features as Tom mentioned above. I asked the sales person which was the easiest to use and after a brief moment he said “Garmin. .
The big difference I could see between the 180 and 162 besides the price tag was that the 180 used the cartridges instead of the CD’s you buy and download for the 162. The 180 had more detail in the chart but the chips are very expensive. Garmin is offering a $200 rebate when you buy the 180 and a $299 chip so it balances out. I think the 180 was $569 and the 162 was $379. You can get the 162 with an internal antenna also which for us smaller boats is nice; it’s even $20 cheaper. West Marine also had a combination unit called the Garmin168i. Internal antenna with a depth and fish finder for around $570 ish, same features as the 162.
I am adding the 168i to my x-mass list.
posted 11-15-2000 07:21 PM ET (US)
I picked up the Lowrance GM100 handheld GPS unit with the mapping software last week. After playing with it (solidly for five days) I think I like it a lot. The mapping software does give you a great deal of detail. It is also possible to download topographic info (I hike when I'm not on the Whaler).
posted 11-15-2000 10:21 PM ET (US)
I picked up the 168 garmin,waterways Cd,and
the quick release surface mount kit.The Ac/pc
adapter has been back ordered.I've got to run
the transducer cable and the external antenna
posted 11-16-2000 07:21 AM ET (US)
In a simple word no! The 100 depends totally on the software and computer interface to enhance or up load maps you create, plus it has no sonar capabilities. The only unit today Lowrance makes which uses map cartridges is the GM 2000 unit that is a chartplotter designed to interface with various components. It does not have the ability to interface with the Lowrance computer mapping software! (we solved that by purchasing a GM Sport, which is now discontinued, that has the ability to download and flash cartridges for use in the map reader of the 2000 unit. Plus, the GM Sport makes for a nice GPS in the our 13 Sport and/or back up for the 2000). The 2000 will be replaced shortly with the GM 3000. You can travel over to Lowrance click on new products and compare features if you like between the 2000 and 3000 units ---
Guess it is how much you use anything determines the learning curve for any of these units. After we got the hang of the 2000 unit was amazed at all the capabilities. Since we coupled it with DGPS it has become awesome almost has pin point accuracy quite incredible. I might add the GM Sport also is a fine unit able to handle dual map cartridges, and the built in background map like the 2000 is fine under most circumstances.
PS "GM" refers to Global Map and yes the GM 100 is waterproof
posted 11-16-2000 10:14 AM ET (US)
You have to worry about corrosion inside
the battery pack if it gets wet there.
This is the first I've heard that the 175
"Garmin's do it yourself map programming" is
For those contemplating a 162/168. First,
DGPS is a lot less important now than it was
posted 11-16-2000 10:27 AM ET (US)
Hi Chuck yep your right do have to rinse and clean it if that battery pack gets wet ---
Hey as far as DGPS is concerned wouldn't be with out it or our charts --- to each his own --- Z
posted 11-16-2000 10:35 AM ET (US)
Chuck not sure what they mean by optional on the N-charts --- Garmin's are nice but I'll stick to my Lowrance units until we can afford either a Furuno or Si-tex unit plus radar Z
posted 11-16-2000 02:53 PM ET (US)
Like BigZ, I used a fully loaded Lowrance Global Map 2000, with DGPS& dual frequency sonar. Works fine, but I guess it's already about to become obsolete, considering their new models. One just can't keep up with the technology.
I hear there's a new GPS unit, soon out by Raytheon, that obsoletes the DGPS antenna. It evidently has the correction signals incorporated into the single GPS receiver, with the correction signal coming from satellites instead of land based antennas.
posted 11-16-2000 03:38 PM ET (US)
Guys I still can't see the need for GPS when strictly cruising the ICW and charted surrounding waters (no intention of going off-shore). Charts are in front of me and seem easy to read and apply, so why do I need GPS. It sounds as though all of you seem to think its vital. As popular as the technology is, I'm sure my ignorance is blinding me---please enlighten me---tell me exactly why I need it!
posted 11-16-2000 03:59 PM ET (US)
Joe -- well GPS is just an aid to basic navigation in your case line of sight coastal/river -- but when your not at all familiar with the area even on the ICW those "sign" post aren't as easily spotted as you might think so a GPS comes in handy to plot out your course before hand entering waypoints where it could be very easy to screw up --- when your traveling at 25 -35 mph and the wind is blowing and your trying to drive the boat look at a chart use the binos to spot landmarks you'll see how useful even an inexpensive GPS can be --- and in the case of big water and there is quite a bit on the ICW whether wide rivers, bays, or sounds trying to juggle navigation particularly in a small craft isn't exactly like having a cup of tea --- then you have the visibility problems which can sort of crop up out of no where ---
Anyway no you don't need one --- that is if you know how to coastal navigate --- charting out each course leg, keeping track of heading, time and distance then plotting your current position and then recalculating your next segment based on how far you might have misjudged the current and or your speed or heading --- etc Tec. --- you still should know how to do all this with or without a GPS or Loran unit --- as I said they just make life easier but still don't take the place of basic nav skills --- Tom
posted 11-16-2000 11:15 PM ET (US)
My reading is that the G-charts for offshore
got their data from Navionics. I'm now
recollecting that Garmin did buy it.
Why GPS? One word: FOG. I've come up
posted 11-17-2000 07:50 AM ET (US)
Wide Area Augmentation System or WAAS
Well Larry the primary intial use is for aviation and the FAA is developing the system.
Appears like this is a Raytheon ball game at present in producing receivers for marine use, hasn't been approved but looks very promising --- here's the link that explains it all for the present anyway (going to be costly at first I think and might not offer much more than ground based DGPS)
posted 11-17-2000 09:27 AM ET (US)
For everything you wanted to know about GPS go to http://joe.mehaffey.com
It's primarilary devoted to handhelds but the GPS knowledge is immense. Don
posted 11-17-2000 09:46 AM ET (US)
To add to the excellent link Don mentioned two other sites which might be usefull
Peter H. Dana, Department of Geography, University of Texas at Austin
and of course the USCG navigation site is a must have link http://www.navcen.uscg.mil/
posted 11-17-2000 10:29 AM ET (US)
Thanks for the great info. The Mehaffey site is truly amazing!
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