Specifications include, but are not limited to: Two multibeam sonar heads must be connected to one compact rackmount sonar processor and produce 20 to 1024 user selectable beams per ping and be fully frequency agile from 200 kHz to 400kHz. System maximum depth must be 300 m at 400 kHz and 575 m at 200 kHz. The system must be supplied with 25 m long transducer cables, a set of spare cables, Etronax (OR EQUAL) brackets, a nuts-and-bolts kit for ease of installation. Multibeam housing must be made of Titanium to withstand the harsh and corrosive marine environment.; The multibeam system must have a simple upgrade path available. When using the normalized backscatter feature, the user must be able to change the sonar settings to allow for improved bathymetry and backscatter. Parallel bathymetric, snippets and water column data must be output at any ping rate. Both continuous wave (CW) and frequency modulated (FM) pulses must be operable at all frequencies. The system must include adaptive gates, which minimize the risk of false detections, and Vertical Detection Mode important for following challenging topography and vertical quay walls. The system must use a detection method for vertical structures in multi-path rich environments and has the ability to setup a ping sequence of more than 5 user defined frequencies. The system must automatically disable pinging when wet ends are out of the water and be able to output bathymetry, seabed backscatter, and water column backscatter data in parallel without reduction in ping rate. The system must be frequency modulated at all frequencies and have a swath angle of 170° at all operating frequencies.; The hydrographic multibeam survey package must have an integrated inertial measurement/heading unit. This inertial measurement unit (IMU) must include 0.01 degree roll and pitch performance and IN-Fusion 2.0 Global navigation satellite system (GNSS) aiding with TrueHeave (OR EQUAL) producing a robust and accurate full six degrees of freedom position and orientation solution. This built-in inertial navigation system must come pre-configured and pre-wired for mobilization and interfacing.; A hydrographic acquisition and processing software must be included to integrate the data collected using the above multibeam and IMU equipment.
