Boat Watch - Ship Tracking is a free iPhone app developed by Pocket Mariner Ltd. that allows you to track boats and ships in real-time, anywhere in the world. With the app, you can spot and identify boats and ships and see their name, type, and destination instantly. Moreover, the app allows you to set any boat or ship as a favorite and track it on the map. This feature is particularly useful for tracking ferries and rescue vessels or following cargo across the world.

The app also offers an optional In-App purchase that provides additional features such as full boat information, showing boats' recent tracks, setting multiple favorite boats, and getting alerts when a tracked boat arrives or departs. Additionally, you can purchase official NOAA nautical charts for the US and UKHO Admiralty derived charts for the UK&IE to get the same view of the ocean as the ship's navigator, including shipping channels, buoys, lights, and hazards.

With its global ship coverage and the option to receive alerts for multiple boats, Boat Watch - Ship Tracking is an excellent app for people with loved ones at sea or those interested in tracking boats and ships.