SAL R1a is the fourth generation acoustic correlation SAL speed log for measuring relative speed – speed through the water. The log is designed to meet requirements as specified by authorities and ship-owners. Its performance exceeds the various IMO specifications and has proven reliability in many thousand installations worldwide.

Main features of the SAL R1a log

  • Acoustic correlation technology

  • Easy set-up and calibration procedures from the bridge SD4 indicator.

  • Flexible calibration allows very accurate reading over the speed range.

  • Small size bottom arrangement – transducer diameter 32 mm – for easy installation.

  • Bottom arrangements are fully compatible with previous models of SAL Imcor and SAL R1.

  • A number of various bottom part adapters enables retrofit, exchange of existing systems, even on ships afloat.

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Express Marine Electronics Co. Ltd.


Unit 2, 23/F., Man Shing Ind. Bldg.,
307-311 Castle Peak Road,
Kwai Chung, Hong Kong

香港 葵涌 青山公路307-311號
萬勝工業大廈 23樓 2室