Category Archives: Navigation

Anchor alarm for iPhone

Posted on December 28, 2011 by

I found this very useful anchor alarm app for iPhone and iPad, made by the Active Captain crew. It’s called DragQueen, and it works using the GPS function to lock in a position while at anchor. When the anchor drags … Continue reading →

Posted in Boats and boating, Navigation, Sailing and Cruising, Technology | Leave a comment

Marine Navigation App for iPhone, iPod touch and iPad

Posted on October 15, 2011 by

A great tool to view marine charts on iPad or iPhone. I used it while sailing in Thailand, and it works like a charm. Check it out: iNavX

Posted in Boats and boating, Maritime & Navy, Navigation, Sailing and Cruising, Technology | 1 Comment

‘Satellite’ navigation in the 18th century

Posted on March 6, 2010 by

Low-tech Magazine: Satellite navigation in the 18th century. Nice article about navigation in the time before GPS.

Posted in History, Maritime & Navy, Navigation | Leave a comment

How to track ships with an iPhone

Posted on January 5, 2010 by

Check out this very cool app for iPhone. It’s called gTrax, and it lets you track ships through their AIS-B transmitter (an automatic identification system for ships, similar to what is being used in aviation). Now it covers the important … Continue reading →

Posted in Boats and boating, Maritime & Navy, Navigation, Sailing and Cruising, Shipping, Technology | Leave a comment

Brandaris lighthouse

Posted on December 20, 2009 by

The Brandaris is a lighthouse on the Dutch Wadden Sea island Terschelling, in Friesland. The first Brandaris was built in 1323, but it was destroyed in 1570. The current tower was built in 1594. It was my daily sight when … Continue reading →

Posted in Island tales, Maritime & Navy, Navigation | Leave a comment

Foreign GPS users risk arrest.

Posted on March 26, 2009 by

From the South China Morning Post this morning. It seems that the paranoia in this country knows no limits. Foreigners using GPS devices on the mainland risk being detained by police or national security agents if they suspect them of … Continue reading →

Posted in Censorship, China, Chinese Fascism, Navigation | 4 Comments

Navigation equipment for ‘Waratah’.

Posted on May 5, 2008 by

One of the things that had to be sorted out, is the choice of navigation and communication equipment. When you are building a new boat, you have the chance to select the system you want to have in one go, … Continue reading →

Posted in Boats and boating, Dix 43 project, Meteo, Navigation, Sailing and Cruising | Leave a comment

Ocean passage planning

Posted on November 13, 2007 by

A very useful maritime weather site is PassageWeather.com It’s a valuable tool to help sailors with their passage planning and weather routing. The site provides for every area the surface wind, surface barometric pressure, and wave height and direction forecasts. … Continue reading →

Posted in Maritime & Navy, Navigation, Sailing and Cruising | Leave a comment

Ancient sea travellers had heads in the clouds.

Posted on November 1, 2007 by

It is fascinating how the ancient Polynesians were able to navigate accurately over long distances, without compasses or clocks. I found the following interesting article in the Telegraph: A stone tool found on a remote Pacific island has provided evidence … Continue reading →

Posted in Maritime & Navy, Navigation, News and Opinion | 1 Comment