This is what users of Brookhouse Dataloggers say:

April 2010

I wanted to let you know that I have been collecting bathymetry data with your Brookhouse NMEA logger and have been very happy with the results.  The system is easy to setup, has worked with Trimble and Garmin gps units, and provides data that is easily imported into AutoCad for post-processing. 

Thank you for all of the assistance you have provided.

Jay Cuetara

Water Resources Engineer

Solano County Water Agency


Hope you still remember me.  Some years ago, I bought one of your dataloggers.  I am emailing you today just to tell you that after all these years, your datalogger is still very much functioning like brand new!  I have not encountered a single problem with it.  I am very satisfied with its performance.

Just FYI,
Best regards,
Ed Garcia

Indooroopilly, QLD, Australia

We recently used the Brookhouse data logger to profile several waterholes for accurate calculation of storage volume. The connections to the depth sounder and GPS were straightforward, and the unit worked exactly as expected. We received excellent support and communication from Brookhouse prior to product purchase and during the use of this unit. We are very pleased with this product and would recommend it to others.

Sharon Marshall
Scientist - Aquatic Ecology
Aquatic Ecosystem Health Unit
Department of Natural Resources and Mines
QLD, Australia


I had a chance to use the data logger last week.  It worked great.  The connections to the Eagle Cuda 240i were straightforward and the instructions from Brookhouse were clear.  I now have close to twenty hours of bathymetric data for the lake that Im mapping.  My highest praise for the data logger!!!!
For those customers who are looking to acquire a new GPS/sonar unit for use with the data logger, Id also highly recommend the Eagle Cuda 240i.  The interface to the data logger was simple and easy to implement.  I found this unit to be extremely powerful with many nice features.
Thanks for a great product.

Gary Proehl


March 2006


I am pleased to send you some samples of the mapping we are doing so far.   The sample images were generated by Surfer8 and covers an area of about 4 hectares and GPS tracks nearly 10kms long.

Am very satisfied with your datalogger.  It is indeed very ruggged and very convenient to use.

best regards,
Ed Garcia

and more:


Many thanks...I received the logger about a month ago and have undertaken a number of days of survey and it works very well. Very pleased with the unit. Thanks again for moving my unit up the priority list.
The logger is being used to collect data for fisheries and fish farming management purposes.

Andrew Rodger
Namara Projects
North Lamerick, Isle of Berneray, North Uist, Western Isles


My company carries out many different operations in both marine and freshwater environments. These include video surveys using underwater sleds and drop cameras and bathymetric surveys. When conducting these surveys it is essential that we are able to log position and depth so as to be able to relate our position to the video footage. We also conduct these surveys off a number of different sized vessels with a large variety of staff carrying out the surveys. For these reasons we needed a datalogger that has the flexibility and reliability to work in these different environments and is easy to use. The Brookhouse datalogger provides an effective method of logging the information we require. Our modified version also interfaces with our video sled and can log both sled depth and heading information, which is sent to the surface via umbilical cable. This data logger has meant we can do away with the potentially expensive situation of needing to have a laptop computer onboard a small open boat.

Greig Funnell
New Zealand