The SAC series NDB system supports the wind power installation vessel N1131 "Feng Sheng" (Wind Ace)

As the latest generation member of the Cadeler series of wind turbine installation vessels, the 'Fengsheng' vessel has achieved a comprehensive leap in design, performance, and intelligence level. The vessel is equipped with an over 5,600 square meter super-large deck, effectively increasing the load capacity by more than 17,600 tons. The main crane's lifting capacity exceeds 3,300 tons, and it is equipped with a hybrid power system. It is compatible with the latest dynamic positioning technology and can precisely install wind turbines of over 20 megawatts. It fully adapts to the complex operations in deep-sea environments and is the 'flagship' among all self-elevating wind turbine installation platforms in the world. The helicopter platform has added the NDB system, providing more precise guidance for helicopters.

Southern Avionics Company (SAC) is a professional manufacturer of NDB (Non-Directional Beacon) in the United States. Its products are industry benchmarks for maritime helicopters and aviation navigation.

Product positioning: All-solid-state, medium wave (MF) navigation transmitters, used for airports, routes, offshore platforms/ships, providing positioning, approach, and landing guidance for aircraft/helicopters, serving as a backup navigation system in case of satellite navigation failure (but now the platform uses it as a common device because it can provide precise positioning).

1. Main model: SE125 (New Generation)

- Architecture: All-digital, dual transmitter redundancy, IP66 protection

- Frequency: 190–650 kHz (MF band)

- Power: 10–125 W (carrier power)

- Power supply: 85–264 VAC, wide voltage adaptation

- Temperature: -40°C to +70°C, suitable for harsh environments

- Core technologies:

- Self-developed WebWatch software, Ethernet remote monitoring/configuration (RJ45)

- Built-in BITE self-check, quick fault location

- Combined with PC-1000/C3 antenna coupler, compatible with whip/loop antennas

2. Predecessor classic: SA series (such as SA100)

- In service for over 30 years, highly reliable, long lifespan (a certain platform in Brazil has been in use for 32 years, and Kenya has been using it for 28 years)

- Analog architecture, stable performance, global inventory large, continuous support

3. System composition

- NDB host (dual transmitters)

- PC-1000/C3 antenna coupler (ATU)

- Whip antenna (10 m) or loop antenna

- MR5 listening receiver (FAA standard)

- Antenna cables and installation accessories

4. Key features

1. High reliability redundancy: Dual transmitters, automatic switching in case of single-path failure, ensuring continuous transmission

2. Remote operation: WebWatch supports cross-network monitoring, reducing on-site maintenance costs

3. Compliance certification: Compliant with CAP437, FAA standards, suitable for civil aviation/military aviation/offshore platforms

4. Strong anti-interference: All-solid-state design, industrial-grade temperature range, suitable for harsh environments

5. Typical applications

- Civil airports/helicopter landing points

- Offshore oil platforms, wind turbine installation vessels (helicopter guidance)

- Backup navigation in remote areas of routes