Does the vessel need to be in dry dock to install or remove the Transducer Module?

Generally, the fairing must be installed while the vessel is in dry dock. However, once the fairing is installed, the Transducer Module can be installed and removed underwater. The back of the Transducer Module has an underwater, wet-mateable connector. We recommend keeping the cable plugged and the fairing covered with a plate if the Transducer Module will be removed for an extended period of time.