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New monitoring network for Scottish ports

In the past, the ferries operating off the west coast of Scotland would have to sail to port to assess weather and tidal conditions would allow them to berth alongside the pier.  In efforts to save time, fuel and costs, the Caledonian Maritime Assets Limited (CMAL), which owns many of the ferries, ports and harbors in the region, decided to install 15  tide and weather stations, using OTT technology. These stations also provide passengers with earlier warnings of potential ferry cancellation, as well as protect the crew from unsafe berthing conditions.

The technology used consists of OTT Radar Level Sensors.  At two locations, it was not possible to install the OTT RLS, so the OTT CBS was installed instead. Included in the stations are Lufft ultrasonic weather monitors for meteorological data and an Adcon radio for telemetry.  These 15 stations are currently in use and provide the reliable, consistent data the ferries require.

Read a detailed description of the project here

Radar a impulsi OTT RLS


Sensore di livello radar senza contatto a basso consumo

OTT RLS è un sensore di livello radar senza contatto con tecnologia radar a impulsi ideale per il monitoraggio in ubicazioni remote o di difficile accesso.

  • Acqua di superficie
  • Livello dell'acqua/soggiacenza
  • Radar a impulsi senza contatto
  • Misura il livello dell'acqua o la soggiacenza da un ponte, molo o braccio di montaggio
  • 0.4 … 35 m
  • 0.8 … 2 m: ± 10 mm; 2 … 30 m: ± 3 mm; 30 … 35 m: ± 10 mm
  • No
  • SDI-12, RS-485 (using SDI-12), or 4 ...20 mA
Sensore gorgogliatore OTT CBS per la misurazione del livello di acque di superficie


Sensore gorgogliatore per il monitoraggio delle acque di superficie

OTT CBS è un sensore gorgogliatore compatto, preciso e a basso consumo per il monitoraggio del livello delle acque di superficie o sotterranee.

  • Acqua di superficie Acque sotterranee
  • Gorgogliatore
  • Misurazione del livello dell'acqua priva di deriva: nessun sensore di pressione o componente elettronico nell'acqua
  • 0 ... 15 m o 0 ... 30 m
  • ± 3 mm (versione ad elevata accuratezza); ± 5 mm (versioni standard e a 30 metri)
  • No
  • SDI-12, RS-485 (con SDI-12), o 4 ...20 mA
  • Historically, ferry masters would have to sail to a port and visually assess the weather and tide conditions before deciding the weather safe berthing would be possible.
  • Remote access to accurate, local data on tide level and key climatic conditions brings substantial improvements for the safety of passengers, ship crew, and harbor operations staff
  • In recent years, severe weather events have become more frequent and seem to develop faster. (e.g. At the port of Armadale a sudden drop of temperature of 8°C in just 5 minutes has been recorded and a record wind gust of 96 knots at Castlebay). 


Each monitor is located adjacent to the main berthing area on the pier with a lockable GRP control box. The system is comprised of:

  • OTT Radar Level Sensors with a 35 m measurement range
  • Lufft Weather Sensors - Ultrasonic Weather Monitors - measuring wind speed, gust and direction, air temperature and barometric pressure
  • Adcon radio units, with back-up batteries and a marine grade antenna.
  • The sensors have no moving parts and extremely low power consumption.
  • At two locations it was not possible to install a radar sensor so an OTT CBS (bubbler sensor) was installed.
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