News
Beheerder
Many Waveriders we supplied have been equipped with a Superstar GPS receiver. Recently it has come to our attention that the Superstar generates a faulty date in the logger files. The problem can be explained by an unexpected “GPS week rollover”. The internal date obtained from the GPS satellite system is incorrect. Typically the date is set to the year 2096. To convert the incorrect data we are currently developing a software tool. The only solution to this problem however is to replace the Superstar GPS receiver. The Superstar position module must be replaced with the µBlox GPS receiver (DWR-MKIII and WR-SG). The µBlox GPS receiver was introduced in the beginning of 2012.

2018-12 Compact Air Temperature will be available as of January 2019

by Beheerder on 10 December 2018 05:19
As of January 2019, Datawell will introduce a new meteorological parameter on the Waverider.

 

The newly developed Compact Air Temperature (CAT4) option integrates the HF antenna, flashlight and an air temperature sensor. The air temperature sensor applies a novel concept, which corrects the measured temperature for (solar) radiation and detects adverse effects like evaporation.

 

The CAT4 antenna measures the air temperature at approximately two meters above the sea surface, complementing the wave measurements.

 

The CAT4 option is available on all Waverider buoys, except for the DWR-G4.

The CAT4 antenna is not interchangeable with the HF/Flashlight antenna. Also, to upgrade existing buoys, hardware and firmware updates are required.

More technical information and FAQ will be made available on the Datawell website.

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2018-12 35mm/30m Rubber cord available in harder compound

by Beheerder on 10 December 2018 05:08
Since the introduction of the Wavec, the first commercial available directional buoy in the eighties, Datawell has supplied rubber cords in a harder (60 Shore A) compound. At the introduction of the Directional Waverider, the Wavec became obsolete and these harder rubber cords were less in demand.

 

However, every now and then we do get a request from customers for these 60 Shore A lines and we have always been able to supply these cords. Last year, stock of the harder rubber cords was running low and we had to disappoint some users unfortunately. Therefore, we are happy to announce that we have restocked these 60 Shore A cords and are again able to supply.

 

60 Shore A lines are available in 35mm and 50mm diameters with all well-known safety lines.



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2018-12 New safety line for 50mm rubber cord

by Beheerder on 10 December 2018 04:55
Apart from our 27mm and 35mm rubber cords intended for Waverider mooring, Datawell also provides 50mm rubber cords for the mooring of large navigational buoys or other purposes.

The 50mm cord can be equipped with a safety line; our standard has always been 10mm Dyneema.

 

Recently, we noticed customer interest for a stronger safety line and applied16mm Dyneema. With several requests in line we have decided to make this customer specific design available for all customers.

 

Thus we can now offer this 50mm rubber cord with 16mm Dyneema safety line to all those who are interested. Please contact our sales department (sales@datawell.nl) for pricing and availability.

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2018-12 Rubber cord with swivel on both ends available

by Beheerder on 09 December 2018 20:09
In 2016 Datawell introduced rubber cords with a specially designed swivel terminal instead of a regular terminal. The standard Waverider mooring can be applied to almost all situations. However, under some circumstances the mooring line can get twisted and tangled up. This phenomenon is usually caused by the 10Kg float that twists around the rubber cord, limiting the stretch of the rubber cord and afflicting damage to the rubber cord.

In our experience, this situation is most present in locations where the buoy is submitted to a lot of tidal movements in shallow waters.

Extensive tests have resulted in a solution to reduce the twisting of the mooring line;

A special rubber cord terminal with an integrated swivel. This swivel will help reduce rotation of the rubber cord.

 

Now, 2 years later, we noticed customer interest for rubber cords with swivel terminals on both ends...

2018-12 Transferring from light/dark detection to GPS detection on Waverider buoys

by Beheerder on 09 December 2018 19:51
We have decided to introduce the GPS light detection system for all our Waverider buoys where it was previously only available for the DWR4. A sunrise/sunset-algorithm based on the GPS position and time decides whether the LED flasher should be ON or OFF.  

Should you desire to have this GPS light detection system installed on your current hatchcover (serial numbers starting with 70xxx, 71xxx and 72xxx), this unit will have to be returned to Datawell. Please contact Datawell service department (servdept@datawell.nl).

 

Hatchcovers produced after October 1st 2017 already have the GPS light detection system installed. We again stress that no change in the design of the antenna is made, which means that antennas are completely interchangeable.

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2018-12 New Waves4 release

by Beheerder on 09 December 2018 19:48


The new 5.2.0 release of Waves4 is available. This release improves the support for the new CAT4 option:

· Loading DMF files stored the MkIII CF logger card

· Support for the CAT4 option on the DWR4 (DWR-MKIII already supported)

· Added a CAT4 version information widget

 

The usability of Waves4 has been improved. When a new campaign is selected, Waves4 provides at-a-glance views of key parameters and widgets (“dashboard” or template). This reduces the number of actions the user has to take to see the buoy data. When loading files, Waves4 automatically opens a set of key widgets based on the type of file loaded. Other usability improvements are:

· Minor tweaks of the user interface

· The option to export the content list of the widgets to CSV files

· Added several new widgets

 

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2018-12 Power switch standard on all Waverider buoys.

by Beheerder on 09 December 2018 19:42

Since the introduction of the DWR4 buoys, these buoys have been equipped with a standard power switch. This standard integration of the power switch has resulted in positive reactions from customers.

Up till now, the power switch was an option on the DWR-MKIII, DWR-G and WR-SG, but as the demand for it increased, we have now decided to equip all buoys purchased after January 1, 2019 with the power switch.

 

2018-03 RC27B and RC27G batteries

by Beheerder on 27 March 2018 02:53
In our October 2017 News Bulletin we revealed that the initial capacity of 240 Wh of the non-magnetic RC24B batteries was underestimated, though the actual capacity was still undetermined. Over the last few months, we gained more experience with the batteries in our low energy consuming Waverider buoys and we can now state that the batteries contain 270 Wh. We have therefore decided to rename the batteries to RC27B. Please note that your RC24B batteries contain just as much energy as the RC27B batteries.

 

In addition to the increased capacity of the RC24B batteries, we can also inform you of the increased capacity of the magnetic RC25G batteries. These batteries have a likewise capacity of 270 Wh which is why we have decided on renaming them as well, to RC27G.

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2018-03 Introduction of GPS light detection for all buoys

by Beheerder on 26 March 2018 16:54
We have decided to introduce the GPS light detection system for all our Waverider buoys (except for the DWR-G4) where it was previously only available for the DWR4. A sunrise/sunset-algorithm based on the GPS position and time decides whether the LED flasher should be ON or OFF.

 

Should you desire to have this GPS light detection system installed on your current hatchcover (serial numbers starting with 70xxx, 71xxx and 72xxx), this unit will have to be returned to Datawell service department.

 

Hatchcovers produced after October 1st 2017 have the GPS light detection system already installed. We again stress that no change in the design of the antenna is made, which means that antennas are completely interchangeable.

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2018-03 Buoy tester Software

by Beheerder on 26 March 2018 05:50

With the introduction of the DWR4, we have introduced the Buoy Tester software. This software is designed to give you a clear and quick indication of the state of the buoy’s wave sensors before deployment.

This software has proven to be very informative and user-friendly and we have therefore expanded this software to also include the MKIII buoys. The Buoy Tester software is freely available from our website on the download page: http://datawell.nl/Support/Download.aspx 
 

2018-03 Waves4

by Beheerder on 24 March 2018 04:39
The new 5.0.0 release of Waves4 will soon become available. In this release a considerable amount of new features are added. The most important addition is the ability of selecting and loading of historical wave data. Also, a number of widgets intended for the CAT4 option are already added. An overview of the new additions is given below. - -  - Selection and loading of historical wave data; - Bright new look and feel of the widgets; - Iridium SBD communication for DWR4 and DWR MkIII buoys; - GSM SMS communications for DWR MkIII buoys; - Non-SI units (°C /°F) supported in graphs and tables; - A watch circle is available in the GPS widget; - An autonomous drift alarm is added for live data; - Zoom functionality in the graphs is added; ...

2018-03 Compact Air Temperature (CAT4)

by Beheerder on 24 March 2018 04:25
  The newly developed CAT4 integrates the HF antenna, flashlight and an air temperature sensor. The air temperature sensor applies a novel concept, which corrects the measured temperature for (solar) radiation and detects evaporation effects. The CAT4 antenna is in its final stages of development and will be available on most Waverider buoys (with the exception of the DWR-G4). First CAT4 instruments will be deployed by a set of selected customers to acquire first hand user experience.  

 

2017-10 Battery capacity underestimated

by Beheerder on 12 January 2018 00:50
Since the introduction of the new orange labelled batteries in January of 2017, we have conducted more tests on their performance. From these tests and our experiences we can now conclude that the initial capacity of 240Wh which is indicated on the battery's label is rather conservative. Batteries have shown to contain more energy than first assumed. Tests on the capacity of the batteries are still ongoing and we hope to be able to give you a more realistic view on their capacity soon.

2017-10 DWR4 0.7m

by Beheerder on 11 January 2018 06:55
With the introduction of the 0.7m DWR4 we have had to reconsider the design of the chaincoupling for this buoy. The standard chaincoupling does not suffice because it is too heavy for the relatively light buoy. The eccentric mooring eye in combination with the relatively heavy chaincoupling would unbalance the buoy. To reduce the weight of the chaincoupling, we have decided to use 4 16mm links on the chain instead of the standard 10 20mm links reducing the underwater weight by 50%. With this decision it is important to note that chains for 0.9m and 0.7m DWR4 buoys are no longer interchangeable. The DWR4 0.7m with or without current meter is now available for rent as well.  

 

 

 



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2017-03 Compact Air Temperature (CAT4)

by Beheerder on 28 April 2017 02:53
At Ocean Business 2017 we will present the Compact Air Temperature (CAT4) antenna which will provide an accurate air temperature.


Four sensors are integrated in the Flashlight antenna. The first three sensors correct for solar radiation and IR radiation. The fourth sensor is used to detect evaporation of precipitation and/or spray. All these sensors together will provide an accurate Air Temperature measurement.


2017-03 Firmware update

by Beheerder on 26 April 2017 04:32
The upcoming firmware release for the DWR4 /ACM introduces a new message containing the distribution of the upcross wave heights.
Also console functionality is added to enable/disable all transmission links as well as the ACM option for the DWR4 /ACM.

2017-03 Waves4 software update

by Beheerder on 25 April 2017 20:39
The new 4.18 release of the Waves4 software suite will be available in May. This release offers support for iBuoy communication option of the DWR-MKIII, DWR-G and WR-SG.

The configurator is now able to fully configure buoyd and waved; therefore it is no longer required to manually modify the configuration files.
Waves4 has several new widgets: the sea surface temperature parameters, the wave height statistics, and the wave height quantiles packet. The latter two require the DWR4 /ACM to be equipped with the upcoming firmware release.
A new version of the libDatawell software library, v0.28, will be available as well.


2017-03 Flight case for hatchcover

by Beheerder on 23 April 2017 18:49
High quality flight cases are now available for the Waverider hatchcover. These cases guarantee save transport whenever a hatchcover must be returned for firmware upgrade and/or repair.







2017-03 New design DWR-G Unit

by Beheerder on 23 March 2017 08:28
The DWR-G Unit has been re-introduced in a new stainless steel housing. The DWR-G Unit included a RS232 interface and can be installed on your own buoy or platform in order to measure its movement.

The serial port outputs HXV-vectors including wave spectrum and system file, just like the serial output of the RX-C receiver and Wave Unit.

2016-10 ITB standard in every DWR-9, DWR-G7 and DWR-G9

by Beheerder on 09 November 2016 06:43
The Intelligent Test Box, or ITB, which we introduced several years ago has proved to be very popular. The ITB arranges multiple battery strings to be discharged sequentially, so that only empty strings need to be replaced when the buoy is serviced. Buoys are generally serviced before all battery strings are fully drained.

The batteries may still contain power for a few extra months, though not enough for a new measurement period. Disposal of half empty batteries is a waste of energy. We have now decided to make the ITB a standard part on every DWR-9, DWR-G7 and DWR-G9 as of 1 January, 2017.

The ITB can also be retrofitted in existing buoys. 

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2016-02 DWR4/ACM in a 0.7m diameter

by Beheerder on 28 February 2016 03:03

 

In 2012 we introduced the DWR4 with Acoustic Current Meter which has now been embraced by the oceanographic community worldwide.This is a 0.9m diameter version with a battery life of 16 months.

At the upcoming Oceanology International in London on 15-17 March we will introduce a 0.7m diameter version which will be much easier to handle and will also be lower in price.

The specifications are identical except for the hull size and battery life which will be 8 months. Battery life can be extended by a solar panel.

The DWR4/ACM 0.7m will be available later this year.