As the leading ship supplier in Midway Islands, Propeller Pitch Adjustment, we specialize in delivering high-quality Marine Decca Systems with unmatched speed and reliability. Trusted by shipowners and masters worldwide, our team ensures your vessel gets everything it needs — on time, every time.
Marine Decca Systems were hyperbolic radio navigation systems used for coastal and short-range maritime navigation. They provided accurate position fixes by measuring phase differences between continuous wave signals from shore-based stations. Primarily used from the 1940s to the 1990s, they were eventually superseded by GPS technology.
The Marine Decca Navigation System is a hyperbolic radio navigation system that operates in the frequency range of 70–130 kHz. Key specifications include:
Size: Ground stations consist of large antennas, typically spanning 100–300 meters in height.
Grade: High-precision navigation system with accuracy ranging from 50 to 500 meters, depending on distance from the transmitter.
Viscosity: Not applicable (electronic system).
Buoyancy: Not applicable (land-based transmitters and shipboard receivers).
Material: Antennas are typically made of steel or aluminum; shipboard receivers use durable, corrosion-resistant materials.
Operating Range: Up to 400 nautical miles from the transmitter.
Power Output: Transmitters range from 100 W to 2 kW.
Frequency Stability: High stability, with phase-locked loops ensuring precise signal synchronization.
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