PolarView 3.0.5

June 4, 2018

PolarView NS
– Native 64 bit support for MacOS
– ActiveCaptain download discontinued
– Bug fixes
NOTE: PowerPC support is still available, but may be removed in future versions


MacOS 64 bit support

May 2, 2018

As Apple is moving towards limiting and, potentially, discontinuing support for 32 bit applications, multiple users inquired about a 64 bit version of PolarView. Given the amount of popular demand, we intend to release a 64 bit version of PolarView for MacOS in the early summer 2018.

At the same time, MacOS PowerPC version of PolarView will be discontinued.

Release announcement will be available on this blog.


ActiveCaptain data discontinued

March 7, 2018

We have been notified by Garmin, owners of ActiveCaptain, that ActiveCaptain data access will be discontinued on May 23, 2018.

Please see our announcement.


PolarView NS 3.0.2

August 15, 2016

PolarView NS

Bug fixes and updates.
Users may need to reauthenticate at product startup.


PolarView NS 2.0.7

January 14, 2016

PolarView NS
– Improve reliability of chart downloads


Navigation / Instrument Acronyms

February 22, 2011

Since users ask about these from time to time, here is the list of acronyms used to denote certain navigation related data items in PolarCOM instruments and elsewhere:

POS – position, that was easy
SOG – speed over ground. Speed of a vessel relative to stationary land.
COG – course over ground. Course of a vessel relative to stationary land.
VTW – speed (velocity) through water. Speed of a vessel relative to water.
HDG – heading. Compass direction into which the bow of a vessel is pointing.
DBK – depth below keel. Water depth measured from bottom of keel
DBS – depth below surface. Water depth measured from surface of water or vessel waterline.
DBT – depth below transducer. Depth as returned by transducer, unadjusted.
AWA – apparent wind angle. Angle of apparent wind as seen from a moving vessel, relative to vessel bow-stern axis.
TWA – true wind angle. Angle of true wind relative to vessel bow-stern axis.
TWD – true wind direction. Compass direction from which the true wind is coming.

VMG – speed (velocity) made good. Speed with which a vessel is moving towards its destination, as measured on a line between current vessel position and destination.
XTE – cross track error. In general, shortest distance from current vessel position to the nearby route leg.
BTN – bearing to next. Compass bearing to the next waypoint enroute.
DTN – distance to next. Distance to the next waypoint enroute.
ETEN – estimated time enroute to next.
ETAN – estimated time of arrival to next.
DTD – distance to destination. Distance to the final point of multi-leg route. Measured along the route.
ETED – estimated time enroute to destination.
ETAD- estimated time of arrival at destination.

ROT – rate of turn.
RDA – rudder angle
SDA – set and drift angle. Used in combined set & drift instrument.
SDD – set and drift direction. Used in combined set & drift instrument.

Any of the direction acronyms above may have a suffix of ‘M’ to denote that they are in degrees magnetic. Without this suffix, assume degrees true. I.e. HDGM vs. HDG.


Happy New Year – 2011!

December 31, 2010

Dear Polar Navy users, friends and chance visitors to this blog!

I’d like to wish you a happy, peaceful and successful new year! Let your routes be free of trouble, your arrivals timely and let wind be always in your sails wherever you may go!