- GPS/GLONASS uncorrected
- Differential corrections via SBAS
- Differential corrections via UHF
- Differential corrections via 3G / 4G
There were some astonishing pictures in the press some weeks ago of a Royal Marine employing a jetpack to launch himself from a RIB to land on the deck of a ship with extraordinary precision. You cannot imagine that it would be a feasible proposition to equip pilots with such a device, but it did cross my mind after reading a horrible catalogue of disgraceful seamanship and poor design exhibited in what ought to be the simple matter of keeping pilots safe as they board and leave ships.