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ACR’s Nauticast B is a major safety advantage especially effective in low visibility conditions. The Nauticast B AIS RS232 and RS422 NMEA electrical interface communicate data directly through the users’ chart plotter or laptop. USB adapters are available for laptop operators. The RS422 can interface with a NMEA multiplexer so AIS targets can be displayed on various manufacturer chart plotters.
The Nauticast™ B AIS also features a remote Safety Related Message (SRM) send button that saves the precise coordinates of an emergency incident and immediately generates a safety distress message to surrounding vessels. The SRM can be configured to allow users to operate in a stealth mode by only receiving AIS data and not sharing for added security to avoid being noticed by pirating vessels.
The VHF band antenna, included with the Nauticast B AIS, is factory-tuned to optimize receive-and-send frequency ranges. Fifteen feet of cable and a PL259 connector are included. Contained within a sturdy, water-resistant translucent case, the unit is compact at 7.8” (D) x 6.2” (W) and only 1.84” (H). Lightweight at just 13 oz, the unit won’t take up much space mounted under the dash.
The Class B transponder standard was developed and recently finalized to create an AIS transponder for use aboard vessels not required to install an AIS system to meet IMO regulations for larger commercial crafts. The concept of Class B was to create a lower cost, smaller and more easily installed transponder for use on vessels where external heading, rate-of-turn and other sensors are not needed or required. Class B transponders are compatible with the AIS network without interfering with the operation of Class A transponders on large commercial vessels.
The Nauticast™ B AIS also features a remote Safety Related Message (SRM) send button that saves the precise coordinates of an emergency incident and immediately generates a safety distress message to surrounding vessels. The SRM can be configured to allow users to operate in a stealth mode by only receiving AIS data and not sharing for added security to avoid being noticed by pirating vessels.
The VHF band antenna, included with the Nauticast B AIS, is factory-tuned to optimize receive-and-send frequency ranges. Fifteen feet of cable and a PL259 connector are included. Contained within a sturdy, water-resistant translucent case, the unit is compact at 7.8” (D) x 6.2” (W) and only 1.84” (H). Lightweight at just 13 oz, the unit won’t take up much space mounted under the dash.
The Class B transponder standard was developed and recently finalized to create an AIS transponder for use aboard vessels not required to install an AIS system to meet IMO regulations for larger commercial crafts. The concept of Class B was to create a lower cost, smaller and more easily installed transponder for use on vessels where external heading, rate-of-turn and other sensors are not needed or required. Class B transponders are compatible with the AIS network without interfering with the operation of Class A transponders on large commercial vessels.

