- GPS/GLONASS uncorrected
- Differential corrections via SBAS
- Differential corrections via UHF
- Differential corrections via 3G / 4G
The Association of Maryland Pilots took delivery of its fourth Chesapeake class launch from Gladding-Hearn Shipbuilding, Duclos Corporation.
Since the Chesapeake class pilot boat was introduced by the Somerset, Mass., shipyard in 2003, 22 have been delivered to 12 pilot associations throughout the United States.