Wednesday, March 15, 2017

Adobe Digital Editions (ADE) User's Guide

1. What is Adobe Digital Editions?

There are several ebook formats on the  market. Kindle is the most popular and iBooks is likely next. Both have well designed systems, which means: easy ebook purchases, distribution, and reader apps with many functions.  Unfortunately, each is highly restricted by their owners (Amazon and Apple, respectively), leaving little flexibility for distribution and use in a physical or online classroom setting, as we need in our training program at Starpath. Kindle is multi-platform (PC, Mac, dedicated readers, iOS, and Android); iBooks are restricted to Mac and iOS (i.e., iPhones and iPads).

There is, however, an attractive, all-platform option offered by Adobe. It is called Adobe Digital Editions (ADE). In this system, Adobe provides the ebook reader app (ADE), and it provides the digital rights management of the documents, but it leaves the sales and distribution of the content to associated partners. It also allows third parties to develop dedicated ebook readers for ADE books, but that is not the subject at hand. For now we are concentrating on the use of the ADE app for reading the ebooks in computers (Mac or PC), as well as tablets and phones (iOS or Android).

With ADE, you can read ebooks in several formats, but the most popular are epub and pdf.  For our books, and most for that matter, the epub format is the best choice when available. It is the same format used in Kindle and iBooks. It has flowing text, and lets the user select the text size, and other formatting. You can place bookmarks, highlight text, and add notes to any part of a page.  You can also search for key words and links within the document can open external webpages or go to specific parts of the book from links within the text. A reference in the text to Figure 1.3, for example, would be an active link to that figure.

You can also view and store free ebooks or pdfs in the ADE reader. This is a good way to compile and organize, for example, manuals to engine or electronics components, or store navigation texts that you download from the USCG, such as the Navigation Rules, Light List, Coast Pilot, and Chart No. 1.

The video below shows the reader in action.

[video 1 ADE Reader in a Mac]
This video will be added shortly. ADE is the only reader option for Adobe ebooks viewed on a Mac, but for mobile devices (iOS and Android) the Bluefire reader offers more functions.

2. How to Download, Install, and Authorize ADE.

Below are the instructions, followed by a short video demo.  You can download the ADE app to any device from the link:

Save it to your downloads, then execute the installer.  During the PC install process, watch the steps. You might want to uncheck the Norton Securities trial period they offer. It is better to get this on your own from Norton if you want this.  It  has nothing to do with the ADE reader.  This does not show up on the Mac install.

The next step is to authorize your device with an Adobe ID. If you do not already have an Adobe ID, then you first need to get one. This is a fast, and non-invasive process. They are easy to get, but it is best to use only one Adobe ID for all of your ADE books. So once you get one, be sure to archive safely the email address you used to get the ID... and the password, but you can always get the password back if you know the email you used.

The reason it is best to use only one Adobe ID for your ebooks is because once you open a purchased ebook with a device authorized to a specific Adobe ID, then that book can only be opened on devices using that same authorization. Over the years and over the books, it can get confusing if you have more than one Adobe ID. With just one ID, it is easy to move your books around to other devices without any issue.  This situation is not unique to Adobe.  It is just the same with Kindle or iBooks. The only difference is Adobe IDs are very easy to get, whereas an Amazon account or iCloud ID is more involved with credit cards and so on, so we more naturally do not often have multiple accounts.

To get an Adobe ID, go to  and on the top right there is a sign-in link, click that, then under the sign-in form there is a "Get Adobe ID" link. Click that to see what they ask below. That is all. Remember your email address (that is the Adobe ID) and the password you selected.

Then we return to the ADE app on your computer or device to authorize it.

At the far right of the Adobe Digital Editions menu at the top of your computer screen on a Mac, or at the top of the app window on a PC, there is a Help menu. Click that to see the authorization options.

On a mobile device, find the authorization information from the table of contents icon (3 horizontal bars) under Settings.

On computers you see:

        Erase Authorization, and
        Authorization information.

If you computer is already authorized, you see just the last two. This information is presented slightly differently in the mobile ADE apps, but the same options are there.

Choose Authorize Computer from the menu, then in the authorization window leave the option "ebook Vendor" set to Adobe ID, and enter your Adobe ID email and the password below.

Leave the box unchecked that says "I want to authorize my computer without an ID."

Then click the Authorize button, and you are done.

Videos below show this process in a computer and in an iPhone.

[video 2, set up in mac]   [video 3 setup in iPhone ]

3. How to Buy and Download Starpath Adobe eBooks

Starpath Adobe ebooks are sold, distributed, and archived for you by the Qbend Corporation, who have set up an ebook store that you can reach at: 

The store has the books grouped by subject matter, with a standard shopping cart and check out procedure. Bankcard processing is carried out by PayPal, but you do not need a PayPal account to use it.

To purchase books, the first step is to set up a Qbend account.  Again, this step is fast and completely non-invasive. No credit card information is needed to set up an account. The input form is shown below.

The Qbend ID is just for purchasing ebooks and accessing them for download. Your ebooks are also saved here if you need a copy for another device later on—although there are other ways to move books amongst devices.  You could use the same ID for Qbend as for you use for Adobe or choose a completely different one. This Qbend ID has no relationship at all to your Adobe ID. The email address you use here will be the ID you use to log into the Starpath ebook store—or any of the many other ebook stores they host.

Note that the Qbend site does not work if you have pop-up blocking turned on. If you click something and noting seems to occur, check the top of your browser screen to look for a blocked pop up notice, and choose to accept popups from this site.  This unblocks them for this site only, it does not otherwise turn off your blocker.

Once you have selected and purchased a book, applying discount coupons you might have, the book is moved to your Download Basket—a link on the left that shows up once you have logged in.

Selecting the ebook format
Most Starpath ebooks offer two format options, epub and pdf. The best choice here depends on your reading needs.  If you will be reading the books primarily on a computer screen or a tablet, then the pdf format is best.  It preserves the page design of the printed book, and allows for convenient zoon to see details of any image.

On the other hand, if your intention is to read the books primarily on the smaller screens of a phone, then the pdf versions are awkward as you must zoom in and pan the page around as you read it. All doable, but not very convenient.  The option to this for smaller screens is the epub format that uses flowing text and adjustable text size. This format is very convenient for reading the text in the ADE Reader, and there is an ADE Reader for all mobile devices, iOS and Android.

The problem with the ADE Reader for epubs, however,  is how they treat the images.  Unlike other epub reader apps, ADE do not offer a way to zoom the images in epubs, which means some tables and other graphic details cannot  be read. Thus if you want to read the books on a phone, then we need a different reader.  A popular choice is the BlueFire Reader app for iOS and Android, which can be authorized to read ADE books. These apps do offer an image zoom feature (double click an image to zoom it.)

Once your format choice is made and purchased, to download the book to your computer or device, go to My Download Basket and click the download button.  This process does not download the full book, but rather just a very small file with the name "booktitle.acsm."  The download process will put this file wherever you tell it to go, with a default to your downloads folder.  This small file is essentially a proof of purchase that you will then open in the ADE reader—or other readers, as we explain later. The extension ".acsm" stands for "adobe content server message." It is a fulfillment token that identifies the book, where it came from, and your unique purchase.

At this stage, the ACSM file is unclaimed property. That ACSM file could be opened by any Adobe ID that has the file, but once an Adobe ID opens the file, then that same ACSM file will only work in ebook readers authorized to the first Adobe ID that opened it. The ACSM file is still a signature of the book, but it is now claimed by the Adobe ID that opened it first.

To convert the ACSM file into an ebook, be sure you have ADE installed and authorized, then just double-click the file and it will open ADE start to download the full book. Once that is done, it is in your ADE library for further reading.

Alternatively, you can use the menu option File/Add to Library, then select file type ACSM, navigate to where the ACSM file is stored, and select it.  Once that is done, by either method, you just need to open ADE to see the book in your library.

A video example

4. How to Move Adobe  eBooks to Other Devices

One way to load an adobe ebook to another computer is to use the browser of  the second computer or phone or tablet to go to the ebook store and just download the file to the new computer, which already has ADE installed and authorized as above, then follow through as described. This process, like the initial download, is easiest if you install and authorize ADE ahead of time. If you are getting a book that you have already purchased, it will be in your "Download Basket" at the Qbend bookstore.

An alternative method is go the ACSM file you downloaded as in Part 3 above, and just email the file to yourself as an attachment, and then check your mail in any other device or computer you want the book loaded to.  It is important, however, to first install and authorize ADE in the new devices or computers as outlined above.

When you get the email and click the attachment, it will ask how you want to open it, and ADE will be an option. Choose that and you are done.  Since it is common to be able to open your email in any device, one email to yourself distributes the book to all of your devices in one step.

In principle, Adobe has a limit of the number of devices that can be authorized to the same Adobe ID, and this limit is about 6. But you can, if you need more, erase the authorization from some of them if not needed, or in the extreme case you can send an email to Adobe and explain why you need more. Some years ago we saw that restriction applied, but frankly we have not seen it recently and we have very many more than 6 devices accessing our own copies of our books.

Historically, Adobe did not have the "erase authorization" option, so every authorization of a book counted as one of the six, even if you had an old device you threw out, but that is different now. I have not run across any such limitations these days, and, again, we use a lot of devices. There is definitely some limit in effect, but it is not clear how it works. They do answer questions about this if needed.

In conclusion I note that there are several alternative ways to view ADE files in a phone, tablet or PC. Two apps will do this, one is BlueFire Reader and the other is Aldiko. But after extensive testing, we can no longer see any virtue in these compared to ADE.  Now that ADE has a reader  for all devices, I cannot see any strong argument for not just using ADE for all of them.

Sunday, March 12, 2017


Slides and notes from a talk at Portland Yacht Club, March 11, 2017.

• Thanks to Starpath Instructor and PYC member Larry Brandt for the invitation.  I was pleased to take part and to meet so many folks at PYC. Thanks for your hospitality.

• This talk just outlines the basics. we leave details to the book below and related blog posts.

• Here is a bold but true statement: racing navigators who really want to win need to know about marine weather than any other mariner, including the shipping industry and the navy!

• ... but it takes a lot of work to gain the advantage of just a couple knots of wind or 10ยบ of wind angle

Here is the link to the Pacific Ocean Resources.

Two references. One on weather with emphasis of tactical weather analysis is main background; the other our new book on vector charts, which includes unique and timely information on the use of electronic navigational charts (ENC).  These have many efficiency and safety advantages over the raster (RNC) charts, and are the preferred charts when doing optimized weather routing.

Amazon is cheapest source, but you get very useful PC ebooks with print book purchases at  
marine weather    electronic charting

Oregon Offshore race has a record of about 30h, I think.  Winds have been unusually favorable for the race over past couple days, with record breaking times computed in Expedition for say a Farr 40.

Note that the guys on R2AK did tremendous preparation, however, which we discuss elsewhere.

We did quick review of coastal bars.  NOAA has USCG bar reports online.
Below is a sample reflecting strong recent winds:

There is a very good article on west coast bars with great detail.  It is published each year as part of the 13th USCG district Annual Notice to Mariners.  This used to be called Guide to Hazardous Bars, but I think they realized that could be confused with a tour guide of First Avenue in Seattle, so they changed it.  A must read if you are new to WA, OR coastal waters.

This article explains the terms "tips" and "holes," etc, used in these bar reports.

This is important as it can show that you might not be able to stop anywhere along the way... ie the bar is closed.

Making notes for the talk, I was going to use the Umatilla Reef buoy as a waypoint, but was surprised to see it was no longer there. Clearly a good place for a buoy. I will try to find out the story on why it was removed.

A note and plug for our new book on ENC charts.  They can be set to highlight specific contours, and along this route setting one at 60 ft marks the drop dead limit. This would not be used for navigation as such as it is too close in several cases, but it is a good visual on the chart to keep you in perspective to the limit. With an ENC loaded in your nav program, even if you are using an RNC on top of it, you can set alarms to warm if you are approaching a safety contour, etc.

If you can choose when to go, then the COGOW data is the best place to learn climatic wind patterns, worldwide.  Bar none.  This is the best data.  Google COGOW or use the above link. Then play with it to see how it works. This fine work is from your own folks at Oregon State University.

The above is what we have to work with.  Each item has a story and background. Most of the important links to the data are below.   We must leave details to our weather book, and in particular the crucial step of evaluating the forecast will have to be referred to the book as well. 

 Custom links from Starpath designed for mariners.  There is a tremendous  amount of information in these that we are sure will be useful.

               Make your own weather services chart

The check list referred to is in the first overview link, top of the article.

It is reported that Verizon has good coastal coverage along this route, but that has to be tested and not depended upon.

Sat phones cost ~1k$ and then ~1.40/min which can cover a lot of data. Iridium Go is a sat phone hotspot that wirelessly connects to phones and tablets. Data cost is lower, and other conveniences, but these two options need balanced.  The Sat phone has other non maritime applications. is one outlet with much details about the programs.  They also have a rental program.

If you already have SSB installed and working, then that will do the job. But starting from scratch the sat phone is likely best solution.  HF (SSB) radio ends up being about 5k$ install with radio, tuner, and antenna. Then you need Pactor modem, another 1.5k$ or so.  Also the integrated system is somewhat more complex to run.

We made this composite from state data that is available from NOAA

Below is a sample of a valuable document from Canada called
A small section is shown below.  We also link to this in our  page

VHF WX reports local weather. Note that VHF WX is repeated by the USCG twice a day.  Announced on ch 16 then reported on ch 22A.  These reports can be head from farther offshore and also include the coastal reports. 

For longer trips we benefit from a view of the full coast which we get from the high seas and coastal reports.  We can get them in text when the email is working, but when all electronics fail we fall back to battery operated SW receiver.   Below.

• HF times are 930 and 330 AM and PM  PDT.  This is standard back-up to carry.
• these are USCG comm frequencies, preprogrammed on all SSB.
• NMC  all weather; WWV just storm warnings
• WWV man's voice, WWVH woman's voice 
call at storm warning times to hear these

Easier to get these broadcasted reports by txt from saildocs email.  (see later, below) 

Get station numers at     (google "NDBC")

short video below demoing dial a buoy

This is an interactive graphic index to all weather maps plus automated way to send an email request to saildocs to get a compressed version sent to you by email.

Read about this free service and download the interactive pdf from Starpath Briefings.

* * *

Moving on to "GRIB data"...

This is a summary of the regional weather model data. Read about these here: GRIB-formatted Region Wind Forecasts.  Samples of these and further discussion is included in the article: Sailboat Racing in the Salish Sea.  We give links to the his res UW WRF data at is the primary source of wx data by email request. It is fundamental to know about this source.  They offer text, maps, and GRIB files. shows present hr of HRRR data free online, but you can see all 18 hr of data on the Predict wind app for iOS or Android. A really valuable app for every sailor's phone. We can get HRRR data from saildocs. Mac users can also get HRRR in the excellent GRIB viewer from

Pointing out the difference in data resolution.  Note all GRIB viewers interpolate the data, so you may see more wind arrows than are real.  In the above right (from LuckGrib) the real data points are the ones with the small dots, at the corners of the red box.

Expedition from is the top of the line program for sailing performance measurement and analysis and optimal weather routing taking into account the boats polar diagrams, including both wind and wave polars, and indeed, sets of these polars for various conditions. Ocean and tidal currents are also incorporated into the optimizations.

An inshore or coastal route would use GRIB files for HRRR wind (updated hourly and extending out 18h), currents tidal and ocean/coastal. the latter being from HYCOM or RTOFS model, or maybe OSCAR. And wave data from say WW3 model, or maybe better data from the DWD (Deutscher Wetterdienst) whose wave and swell data are now available from — this Mac app costs $20 and is state of the art in stand alone GRIB viewers and offers the broadest range of GRIB files including ASCAT scatterometer data in GRIB format. Even if you are using Expedition for routing, you can get unique data from LuckGrib and then export it to use in Expedition or other programs. 

Here is an example of RTOFS forecast of an unusual patch of 1+ kts of current off the coast. Such patterns would have to be double checked before incorporating into the routing. Compare with other models and ideally if you have HF Radar current data available, check it.

We have a page  about currents at though parts of it are out of date. Read about these "loose cannon" meso-scale current eddies there. Also neat video link there on global currents and eddies.

When weather routing or navigating underway, we want to know of any such prediction of the current, but we cannot count on it being precise or even correct!  The job is know a pattern is predicted and then watch instruments carefully to see if you detect it.... if favorable, might even alter course a bit to look for it.  But if no evidence shows up, then take it out of the routing.  How we handle such things in places like the Gulf Stream is crucial.

In times when your waters are dominated by nearby tropical storms (ie both Vic Maui and Pac Cup last year), which can create large and confusing swell patterns, then it could be equally crucial to be treating the swells properly, and this will take good "wave polars" to execute.  With strong wind opposing strong current, then the waves and currents become crucial to the routing.

You can also test wave and swell data by comparing models with offshore buoys that report these.

The ocean and coastal wind models can also be tested with the GRIB ASCAT data.  View graphic ASCAT data online at the Ocean Surface Winds Team web site (google ASCAT) 

Unfortunately we do not have HF Radar current data north of Astoria, but in many other areas of the coast this is crucial to checking the models that we use in the routing.  The link above is to COASTAL OBSERVING RESEARCH AND DEVELOPMENT CENTER, who coordinates this program.

* * * 

We need some way to display the GRIB data.  Mac users have, which for stand alone viewing and display options is unsurpassed. PC users have many options, from the completely free on up to the premier routing program

Opencpn is an excellent way to get into electronic chart navigation in the first place. It also has excellent plugins for downloading and displaying GRIB data from Saildocs.  And it also has a basic sailboat routing plugin using your own polars. 

For general echart navigation, the Rose Point Coastal Explorer is a popular choice with very convenient chart loading and navigation operations, and it also can download saildocs data or show data you get from other sources.

I end with another recommendation for our new book on Electronic Chart Navigation. It does not address weather per se, but does discuss the display of GRIB files. It mainly explains the great value of using the vector charts for your general navigation, keeping in mind that the weather routing functions are generally done more efficiently with vector charts rather than raster charts, which means to do the best weather routing in the end we need to know as much as we can about the vector charts.