Heave

Certus can provide vertical heave position at four different points on a ship. The Certus heave filter is always on and fully automatic. After power on, Certus requires approximately 5 minutes for its heave filter to converge upon an accurate solution. Heave works without a GNSS fix, however best heave performance is achieved when Certus has a GNSS fix from a GNSS receiver.

By default Certus provides heave from the point at which the Certus unit is mounted, however it can provide heave at four different offset points on the ship. To configure Heave, see the Reference Point Offsets page in the web UI or use the Reference Position Offsets dialogue in the Certus Manager.