Get quick answers and step-by-step instructions
Summary of common problems
● I forgot my ID and Password
If you forgot your password，find it here：
If you forgot your ID，please register a new one:
● May I use PortDistance without register?
No, you can’t.
But we allow anyone to get a taste of our voyage calculation function as a guest
Choose “Guest sign in”, then you could experience following functions:
a) Switch map styles. b) Get distance. c) Modify route. d) Port of call setting. e) Choose vessel.
I forgot my ID and Password
If you forgot your password，find it here：http://www.portdistance.com/jsp/forgot_password.jsp
If you forgot your ID，please register a new one：
● Does PortDistance free to use?
Port distance offers free service within certain limits to every registrant。
PortDistance TERMS & CONDITIONS
10 per day
5 per route
200 per day
10 per route
Max Port Limits
If you want to be our commercial user, check the link below to get our price
P.S. This daily limit is only related to your account. It covers all PortDistance versions.
● I couldn’t use PortDistance web version
PortDistance web service bases on Flash. Please install Adobe Flash Player
before using PortDistance web service. You may couldn’t use our web service on mobile phones and some tablet PCs, because they don’t support Flash. Please try our desktop version and mobile APP.
If you have already installed Adobe Flash Player，but still couldn’t use our web service, please make sure that your Flash Player is not forbidden by your browser. You may also try another browser. We recommend those IE-core browsers for PortDistance web service.
● I couldn’t use PortDistance desktop version
PortDistance desktop service bases on Adobe Air. Please install Adobe Air before using PortDistance desktop service.
If you can’t open PortDistance desktop installation package after download it. Change its filename extension as “. air” on condition that your browser recognizes it as “.exe” or “.zip” file.
● Why PortDistance shipping routes are different from other distance table tool?
PortDistance shipping routes are designed by professional marine masters. We have taken marine topography, port landscape, sea condition and other factors into consideration, making these routes as much as close to the actual sailing of ships.
Here’s an example: A route from Haiphong port to Muara Pantai port.
PortDistance (the left one) bypasses Spratly Islands while another distance table tool (the right one) passes through this area
Let’s have a look on Google Satellite Map. There are so many small islands in Spratly Islands area. It’s not wise to directly sail passes through this area
Here’s an AIS vessel tracking history of “Green Bay”
“Green Bay” truly bypassed Spratly Islands, which means that PortDistance shipping route is more accurate than the other one.
● My fonts are a mess?
That’s mainly because your fonts are not included in our font library. You may use another browser or download our Desktop version.
Download here: http://marinecircle.com/pages/download.jsp
● Couldn’t find the port you want?
First, please check if you have input the full name of that port and spell it correctly. If you still couldn’t find the port you want, report it to us so we can upgrade PortDistance and make it a better product for you.