IP-1747/WSN Enhanced CDU
 The IP-1747/WSN Enhanced CDU is the central navigation distribution system currently installed on SSN 688 (LOS ANGELES) and SSN 21 (SEAWOLF) Class submarines, with future installations planned for SSN 774 (VIRGINIA) and SSGN 726 (OHIO) Class submarines. The CDU receives data from the RLGN, the embedded GPS receivers, and the conventional navigation sources. Data is distributed via network and point-to-point interfaces to the Combat Control System (CCS), sonar, radar, and other network users. The CDU provides an alternate Man-Machine Interface (MMI) with the RLGN to allow users a remote monitoring capability to receive, distribute, and log super channel data.
Features of the CDU include:
- Real-Time Data Distribution System
- Diagnostics and Monitoring of Shipboard
- Navigation System
- Analyzes, Graphs, and Displays NAV Data
- GPS, INS, and Conventional Navigation
- Systems Integration
- Embedded GPS Using GVRC
- Data I/O; Ethernet 100 base TX/FX, NTDS, RS-232/422, MIL-STD-1553B
- Submarine Warfare Federated Tactical
- System (SWFTS) Network Data Distribution
- Remote RLGN operation; Touch Screen
- Secondary Control Display Unit (SCDU)
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