GPS and ship head recording system: technical reference for hardware interface and software

The system described in this manual was developed in response to a requirement for navigational data on 'Vessels of Opportunity' where there are no data available or where it is not possible to gain access to the data. The remit for the system is to acquire and record navigational data, with the secondary function to display the data for operational use. The system must by nature of its portability relies on the vessel for only its basic requirements ie stowage and mains power. Independence from ship support means that the system does not require operator intervention, unless so desired, for the duration of deployment.