Tracking Ships and Boats using AIS receivers:
Effective March 2nd, 2015, certain commercially self-propelled vessels must have a properly installed, operational Automatic Identification System (AIS) no later than March 1st, 2016. The following vessels are required to install and use a Class A or Class B AIS transponder:
http://www.milltechmarine.com/ais-rules
USCG AIS REQUIREMENTS
https://www.navcen.uscg.gov/automatic-identification-system-overview

AIS-2-NMEA , AIS-2-USB , AIS-2-2000 , AIS-Multi , ASR 100 , SLR 200/SLR 200G , SLR 200N/SLR 200NG
(A complete range of 2-parallel channel AIS receivers and transponders from one manufacturer.)
Comar SLR 200N Network AlS Receiver Comar AIS-2-USB AIS Receiver
(Built in Computer). ( Quick and easy setup. )
AIS receiver Comparison Chart and Prices - with photos.
http://www.siitech.com/
AIS Products
https://www.alltekmarine.com/
1.) Marine AIS (Automatic Identification System) Outdoor Vertical Model Antenna
2.) Marine AIS (Automatic Identification System) LP Antenna
2.) Marine AIS (Automatic Identification System) LP Antenna
161.9750 - Automatic Identification System (AIS)
162.0250 - Automatic Identification System (AIS)
Class A AIS products are for ships over 300 tonnes or which are SOLAS vessels. (Transmit at 12Watts)
Class B AIS products are for non-SOLAS vessels. (Transmit at 2Watts)
There are 26 different types of messages capable of being sent by an AIS transponder.
Shipboard AIS transponders have a horizontal range that is highly variable but typically only about 74 kilometers (46 mi).
Class A AIS products are for ships over 300 tonnes or which are SOLAS vessels. (Transmit at 12Watts)
Class B AIS products are for non-SOLAS vessels. (Transmit at 2Watts)
There are 26 different types of messages capable of being sent by an AIS transponder.
Shipboard AIS transponders have a horizontal range that is highly variable but typically only about 74 kilometers (46 mi).
https://groups.io/g/shipplotter
ShipPlotter displays complete information about ships that are
within VHF range of your position & sharing network using the
Universal Automatic Identification System (AIS). Software can be used with most Comar Systems, Smart Radio, AirNav ShipTrax Advanced AIS Ship Tracker, Kinetic AIS-1eR, MarineGadget AIS, AIS Receivers.
AISnet has a USB port in addition to Ethernet.
AISnet is a new AIS receiver for use as an AIS base station at home or in the office.
Utilising the same high performance dual channel AIS receiver as the rest of the Digital Yacht range,
AISnet also features an ethernet socket so that you can connect it to your broadband router and send AIS data to an on-line AIS tracking service.
AIS Forums:
Utilising the same high performance dual channel AIS receiver as the rest of the Digital Yacht range,
AISnet also features an ethernet socket so that you can connect it to your broadband router and send AIS data to an on-line AIS tracking service.
AIS Forums:
ShipAIS.com - Forum
Panbo.com - The Marine Electronics Weblog.
Sea-Technology.com Story - Satellite-Based AIS System Provides Continuous Tracking at Sea.
Live Tracking online at MarineTraffic.com , VesselTracker.com , ShipAIS.com ,