Yearly Archive: 2005

The raster flow begins, a CE first? 3

The raster flow begins, a CE first?

Rose Point Navigation just announced that Coastal Explorer is “the first program to include the entire NOAA chart collection covering all US waters.” What they mean is a sort of mulligan stew of cartography—500 ENC vector charts,...

More AIS…bad data, bad plot? 0

More AIS…bad data, bad plot?

What’s wrong with this AIS target, seen off Naples, Florida, a couple of weeks ago (with the Si-Tex receiver)? How about a bogus MMSI # (only 4 digits), no name, and destination as “HOME”...

Class B AIS, part 2 9

Class B AIS, part 2

Today, I’m afraid, we must speak of “frequency agility.” Part of the Class A standard is that transponders must be able to change channels if ordered to by the presiding local coastal authority. The digital command is received...

Class B AIS, the devil’s in the details, part 1 3

Class B AIS, the devil’s in the details, part 1

Finally I have some specifics about the Class B AIS transponder standard, which is “very close” to finalization: • Like Class A, static data will be broadcast every 6 minutes on alternating channels. A...

Furuno FLS, a category stimulated 8

Furuno FLS, a category stimulated

I first researched forward looking sonar (FLS) back in 2002, and later tested an EchoPilot Bronze on my 25′ Ralph. I really, really like the idea of being able to see underwater ahead of the...

Wilma & Ft. Lauderdale Boat Show 0

Wilma & Ft. Lauderdale Boat Show

Monday, 9:00 am: on Friday afternoon the organizers of the Fort Lauderdale show postponed the opening from Thursday to Saturday, but I’m beginning to wonder if it will happen at all. As you can...

Free the weather, my ass! 1

Free the weather, my ass!

Argh! I haven’t gotten too exercised about Senator Rick Santorum’s bill to limit NOAA’s distribution of weather forecasts because I thought it simply too ridiculous to pass, but yesterday I came across this steaming pile of pure...