Kiri

Saatja:	Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de>
Saatmisaeg:	teisip�ev, 13. mai 2025 00:24
Adressaat:	Darja Jokk; Navarea
Koopia:	Gabriela Kotsulim; Schrempp, Jonas; Erik Iida; Raul Reap
Teema:	RE: Fraunhofer IWES-Liivi Offshore - LOST MOORING / DRIFTING BUOY (16-12/24/20) - Nav. 
WARNING No.46

J�reltegevuse lipp:	J�reltegevus
Olekulipp:	Lipuga m�rgitud

Dear Darja or colleagues,

I�m glad to inform you that our IWES Lidar buoy 6 is not drifting anymore.
As you can see on AIS tracking, the Buoy was made safe into Salacgriva port, thanks to the 
reactivity and effort from the Harbour Master.

The EVA-316 (Riigilaevastik) is on her way to recover our buoy and return it to its intended position, 
with an ETA at Salacgriva around 12:00noon.

I will confirm, all going well, when the buoy has been returned to its position; so you can consider 
taking the Navigational Warning No.46 down.

Thanks a lot
Best regards,
Lo?s
---
Lo?s Legendre | Project & Operation Manager | +44 7564043830 
Fraunhofer IWES - Wind Measurement and Characterization

From: Legendre, Lois  
Sent: 12 May 2025 09:10 
To: Darja Jokk <Darja.Jokk@transpordiamet.ee> 
Cc: Gabriela Kotsulim <Gabriela.Kotsulim@transpordiamet.ee>; Schrempp, Jonas 
<jonas.schrempp@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; Raul Reap 
<raul.reap@enefitgreen.ee> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - LOST MOORING / DRIFTING BUOY (16-12/24/20)

Tere Darja,

Thanks a lot for issuing the warning.
Indeed, the Buoy crossed into Latvian water yesterday and I did contact navarea@lhd.lv who 
acknowledge and informed Latvian MRCC.

We are still working on a recovery operation, I�ll update you at navinfo@ when we have progress.

Thanks a lot
Best regards,
Lo?s
---
Lo?s Legendre | Project & Operation Manager | +44 7564043830 
Fraunhofer IWES - Wind Measurement and Characterization

From: Darja Jokk <Darja.Jokk@transpordiamet.ee>  
Sent: 12 May 2025 08:38 
To: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de> 
Cc: Gabriela Kotsulim <Gabriela.Kotsulim@transpordiamet.ee> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - LOST MOORING / DRIFTING BUOY (16-12/24/20)

Good day,

Thanks for the information!
We have issued a navigational warning about a drifting buoy, but according to the 
marinetraffic data it appears to be already in Latvian waters. Please inform the Latvian 
National Coordinators at navarea@lhd.lv sar@mrcc.lv.
Please keep us informed of any updates.

Best regards,
Darja Jokk
Cartography Specialist
Cartography Department
Estonian Transport Administration
+372 51927358

From: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de>  
Sent: Sunday, May 11, 2025 12:04 PM 
To: VA_navinfo <navinfo@transpordiamet.ee> 
Cc: Erik Iida <erik.iida@enefitgreen.ee>; Toomas Kasemaa <toomas.kasemaa@riigilaevastik.ee>; Raul 
Reap <raul.reap@enefitgreen.ee>; Schrempp, Jonas <jonas.schrempp@iwes.fraunhofer.de>; Stone, 
Stephan <stephan.stone@iwes.fraunhofer.de> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - LOST MOORING / DRIFTING BUOY (16-12/24/20) 
Importance: High

Tere,
I�m very sorry to inform you that our Lidar-Buoy has lost position very late last night.

The buoy is equipped with accurate positioning, and we have constant communication with 
onboard systems.
The buoy is drifting in a South-West at around 1km/h, which is coherent with the surface wind/wave 
direction.
According to forecast the buoy will most likely cross into Latvian waters.

We are looking for a recovery vessel.

https://www.marinetraffic.com/en/ais/home/shipid:9128077/zoom:9

Best regards / Viele Gr��e,
Lo?s
--
Lo?s Legendre
Project & Operation Manager
Wind Measurement and Characterization
 
Fraunhofer Institute for Wind Energy Systems IWES
Am Seedeich 45, 27572 Bremerhaven, Germany
 
+44 7564043830
lois.legendre@iwes-extern.fraunhofer.de
 
Website | Blog | YouTube | LinkedIn | XING

From: Gabriela Kotsulim <Gabriela.Kotsulim@transpordiamet.ee>  
Sent: 28 March 2025 14:32 
To: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de> 
Cc: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; Toomas 
Kasemaa <toomas.kasemaa@riigilaevastik.ee>; Tiit Palgi (Estonian Transport Administration) 
<Tiit.Palgi@transpordiamet.ee>; Darja Jokk <Darja.Jokk@transpordiamet.ee> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring full re-instatement 16-12/24/20

Tere

Thank you for the information!
We issued Navigational Warning No. 17, added the buoy to the chart, and included it in the Notices 
to Mariners.

Please inform Estonian Transport Administration at the email address navinfo@transpordiamet.ee 
when the equipment has been removed.

Yours sincerely,
Gabriela Kotsulim
Chief Cartography Specialist
Cartography Department
Estonian Transport Administration
+372 55676003

From: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de>  
Sent: Friday, March 28, 2025 2:41 PM 
To: VA_navinfo <navinfo@transpordiamet.ee> 
Cc: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; Toomas 
Kasemaa <toomas.kasemaa@riigilaevastik.ee>; Gabriela Kotsulim 
<Gabriela.Kotsulim@transpordiamet.ee>; Tiit Palgi (Estonian Transport Administration) 
<Tiit.Palgi@transpordiamet.ee>; Darja Jokk <Darja.Jokk@transpordiamet.ee> 
Subject: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring full re-instatement 16-12/24/20

Tere,

This is to notify the effective re-deployment of surface monitoring equipment, namely a Wind-Lidar-
Buoy � ODAS Special Mark, on Thursday 27th March 2025. 
The static survey includes seabed-mounted sensors and a small waverider buoy, within a 300m 
Radius from the main ODAS marker buoy.
After the temporary removal of the surface equipment (marking buoy) on the 15.02.2025 the 
Navigational Warning No 10 was issued.

Wind-Lidar-Buoy deployment Coordinates:
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Notice of deviation-rectification from Exploration permit 16-12/24/20:
The broadcasting name on the Wind-Lidar-Buoy AIS has been changed from LIDAR-ODAS to the 
declared name IWES LIDAR BUOY 6 (see below).
Please note that this AIS is a short-range transponder only and need a vessel in range to appear 
online.

 

Thanks a lot
Best regards,
Lo?s
---
Lo?s Legendre | Project & Operation Manager | +44 7564043830 
Fraunhofer IWES - Wind Measurement and Characterization

From: Darja Jokk <Darja.Jokk@transpordiamet.ee>  
Sent: 18 February 2025 06:23 
To: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de> 
Cc: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; Toomas 
Kasemaa <toomas.kasemaa@riigilaevastik.ee>; Gabriela Kotsulim 
<Gabriela.Kotsulim@transpordiamet.ee>; Tiit Palgi (Estonian Transport Administration) 
<Tiit.Palgi@transpordiamet.ee> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring Partial&Temporary Removal 16-
12/24/20

Good morning,

Thank you for the information!
We have issued an appropriate Navigational Warning No 10, please find attached.
Please inform Estonian Transport Administration at the email address 
navinfo@transpordiamet.ee when you have reinstalled the ODAS buoy.

Yours sincerely,
Darja Jokk
Cartography Specialist
Cartography Department
Estonian Transport Administration
+372 51927358



From: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de>  
Sent: Sunday, February 16, 2025 11:50 AM 
To: VA_navinfo <navinfo@transpordiamet.ee> 
Cc: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; Toomas 
Kasemaa <toomas.kasemaa@riigilaevastik.ee>; Darja Jokk <Darja.Jokk@transpordiamet.ee>; Gabriela 
Kotsulim <Gabriela.Kotsulim@transpordiamet.ee>; Tiit Palgi (Estonian Transport Administration) 
<Tiit.Palgi@transpordiamet.ee> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring Partial&Temporary Removal 16-
12/24/20

Tere,

This is to confirm the surface/floating monitoring equipment, only, was temporarily removed from 
the Metocean Monitoring position (23�58.278',57�57.421'); see below), on the 15th February 2025. 
This includes the temporary removal of the Wind-Lidar-Buoy which acts as a marker buoy and 
carries a short-range AIS.

The seabed mounted ADCP, underwater monitoring equipment remains on site, around 150m 
South of the defined position. 

Considering that we will re-deploy the Wind-Lidar-Buoy in 4 to 8 weeks; would you consider 
keeping Navigation Warning number 150 (2024) in place or amending it to prevent 
anchoring/trawling, until the Lidar/Marker-Buoy is re-deployed? Or would you consider place a 
virtual marker?

Thanks a lot for your understanding and support.
Best regards,
Lo?s
---
Lo?s Legendre | Project & Operation Manager |  +44 7564043830 
Fraunhofer IWES - Wind Measurement and Characterization

From: Gabriela Kotsulim <Gabriela.Kotsulim@transpordiamet.ee>  
Sent: 14 February 2025 11:50 
To: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de> 
Cc: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; Toomas 
Kasemaa <toomas.kasemaa@riigilaevastik.ee>; Darja Jokk <Darja.Jokk@transpordiamet.ee> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring Partial&Temporary Removal 16-
12/24/20

Good afternoon,

Thank you for the information! 
Please inform Estonian Transport Administration at the email address navinfo@transpordiamet.ee 
when the equipment has been removed.

Yours sincerely,
Gabriela Kotsulim
Chief Cartography Specialist
Cartography Department
Estonian Transport Administration
+372 55676003

From: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de>  
Sent: Thursday, February 13, 2025 8:11 PM 
To: VA_navinfo <navinfo@transpordiamet.ee> 
Cc: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; Toomas 
Kasemaa <toomas.kasemaa@riigilaevastik.ee> 
Subject: RE: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring Partial&Temporary Removal 16-
12/24/20

Good evening,

Please note that the floating elements of the monitoring deployment at Liivi are planned to be 
temporarily removed from site, with the EVA-316 (IMO 7917977), this Saturday 15th February, in 
the early morning. The EVA-316 will mobilise from and return to the Port of P�rnu. 

The monitoring equipment on the sea-bed will be kept at the location; within 300m of the 
measurement coordinates below.

The floating equipment, Lidar-Buoy (ODAS marker buoy) and Sofar Wave-rider, will be re-deployed 
in a few weeks, once the risk of sea-icing at the location reduces sufficiently.

As the grantor of the marine survey permit No 16-12/24/20 the Ministry of Climate Change have 
been informed too.

I am at your disposal, should you have any questions.

Best regards,
Lo?s
---
Lo?s Legendre | Project & Operation Manager | +44 7564043830 
Fraunhofer IWES - Wind Measurement and Characterization



Saatja: Legendre, Lois <lois.legendre@iwes-extern.fraunhofer.de>  
Saatmisaeg: reede, 25. oktoober 2024 17:15 
Adressaat: VA_navinfo <  
Koopia: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; 
raul.reap@enefitgreen.ee; Tiit Palgi (Estonian Transport Administration) 
<Tiit.Palgi@transpordiamet.ee>; Toomas Kasemaa <toomas.kasemaa@riigilaevastik.ee>; Stone, Stephan 
<stephan.stone@iwes.fraunhofer.de> 
Teema: RE: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring Deployment 16-12/24/20

Good Afternoon,

This is to notify the effective deployment of monitoring equipment (Namely a Wind-Lidar-Buoy � 
ODAS Special Mark) on Friday 25th October, 09:00 local.

Wind-Lidar-Buoy deployment Coordinates:
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Notice of deviation from Exploration permit 16-12/24/20:
I regret to inform you that the broadcasting name on the Wind-Lidar-Buoy AIS could not be 
modified prior to deployment as intended, due to a software issue.
The Wind-Lidar-Buoy is broadcasting as LIDAR-ODAS instead of the intended IWES LIDAR BUOY 6.

 
Best regards,
Lo?s
---
Lo?s Legendre | Project & Operation Manager | +44 7564043830 
Fraunhofer IWES - Wind Measurement and Characterization

From: Legendre, Lois  
Sent: 21 October 2024 16:05 
To: navinfo@transpordiamet.ee 
Cc: Zwick, Sarah <sarah.zwick@iwes.fraunhofer.de>; Erik Iida <erik.iida@enefitgreen.ee>; 
raul.reap@enefitgreen.ee; Tiit Palgi (Estonian Transport Administration) 
<Tiit.Palgi@transpordiamet.ee>; toomas.kasemaa@riigilaevastik.ee 
Subject: Fraunhofer IWES-Liivi Offshore - MetOcean Monitoring Deployment 16-12/24/20

Good Afternoon,

This is to notify the intended deployment of monitoring equipment (Namely a Wind-Lidar-Buoy � 
ODAS Special Mark with AIS) on Friday 25th October, as per Exploration permit 16-12/24/20

Targeted deployement position: 57�57.70343' N 23�58.48477' E (WGS84, dm) / 57.961723�N, 
23.974745�E (WGS84 Dec.)

Vessel: EVA-316, IMO 7917977, Call Sign ESTF,  Expected to depart from P�rnu early morning and 
return to P�rnu late on Friday 25th.

Thanks a lot
Best regards,
Lo?s
--
Lo?s Legendre
Project & Operation Manager
Wind Measurement and Characterization
 
Fraunhofer Institute for Wind Energy Systems IWES
Am Seedeich 45, 27572 Bremerhaven, Germany
 
+44 7564043830
lois.legendre@iwes-extern.fraunhofer.de
 
Website | Blog | YouTube | LinkedIn | XING

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