Maiki Must
From: Oliver Kean <
[email protected]>
Sent: reede, 4. juuli 2025 17:17
To: Peeter Väling
Cc: Emilia Piasecka; Barbara Shipton; Juan Alvarez;
[email protected]
Subject: RE: Marine geophysical datasets off west coast of Saaremaa Island
Attachments: Application information - Oxan - 04.07.2025.pdf
Dear Peeter,
Thanks for the details. Please find attached the application information.
We will be providing an updated shapefile defining the AOI in due course. In the meantime, please proceed with
seeking authorisation.
If you require any further information, please ask.
Kind regards
Oliver Kean
Senior Geophysicist
Email:
[email protected]
Phone: +44 (0) 7476304151
Wood Thilsted Partners Ltd
1st Floor, 91-94 Lower Marsh,
London, SE1 7AB
United Kingdom
http://www.woodthilsted.com/
-----Original Message-----
From: Peeter Väling <
[email protected]>
Sent: 25 June 2025 08:15
To: Oliver Kean <
[email protected]>
Subject: Re: Marine geophysical datasets off west coast of Saaremaa Island
CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you
recognize the sender and know the content is safe.
Hi
Most of this area is surveyed with both MBS and SBP.
In attached picture the western part (green and brown) are surveyed at 2015-2016, the rest later up to 2023.
No modern surveys are available form the shallow areas (areas not covered with solid fill), only sparse data from
Soviet times.
The data is managed by Estonian Transport Administration, and can be requested.
The request must be approved by Estonian Navy and Defence Police.
1
Therefore please write and official application containing information which is indicated in attached document and
send it back to me.
I will forward this to the authorities.
Depths resolution can start from about 1 m (starting from 4 m the output from DDB is lot easier), formats either XYZ
or shape. SBP data in SegY and Meridata format.
Besides of the application no licensing and costs are involved (at least for now).
BR.
Peeter Väling
Head of Hydrographic Department
Estonian Transport Administration
Ühel kenal päeval, R, 20.06.2025 kell 11:14, kirjutas Oliver Kean:
>
>
> Dear Peeter,
>
> I hope this message finds you well.
>
> As part of a study we are undertaking, we are investigating the
> availability of existing high-resolution marine geophysical
> datasets-particularly MBES and SBP data-that may have been acquired in
> the region located off the west coast of Saaremaa Island between
> 2017 and 2024. We understand that reports from other nearby sites
> reference work by the Estonian Transport Administration during that
> period, and we are keen to understand whether any of these data sets
> may cover our area of interest.
>
> To help clarify our area of interest, I have attached a shapefile
> defining the project area.
>
> If you are aware of any relevant datasets-whether managed by EGT or
> other Estonian institutions-we would be very grateful for any
> information you could share regarding:
>
> * Availability and spatial coverage
> * Licensing conditions or access procedures
> * Resolution and format of the data
> * Whether there are any costs or restrictions associated with access
>
> We fully appreciate that such data is of strategic importance and
> would, of course, treat any guidance or correspondence with
> appropriate discretion.
>
> Please don't hesitate to get in touch if you require further
> information or clarification on our request. I'd be more than happy to
> arrange a call if that would be helpful.
>
> Thank you very much in advance for your time and consideration.
>
> Kind regards,
>
> Oliver Kean
> Senior Geophysicist
2
>
> Email:
[email protected]
> Phone: +44 (0) 7476304151
>
> Wood Thilsted Partners Ltd
>
> 1st Floor, 91-94 Lower Marsh,
> London, SE1 7AB
> United Kingdom
> http://www.w/
> oodthilsted.com%2F&data=05%7C02%7Coka%40woodthilsted.com%7C1e22432b411
> 64da252f508ddb3b825a4%7Cf8c934b5ef914921ab60f64278375719%7C0%7C0%7C638
> 864325755524617%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOi
> IwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%
> 7C%7C&sdata=rkEcA2BT2Q38xXGnipE8cSA4tgpPJN3fVRamd0VY%2B3Q%3D&reserved=
>0
>
>
> signature_64641605
>
> The information in this E-Mail is confidential and may be subject to
> Non Disclosure Agreements (NDA). It may not represent the views of the
> Wood Thilsted Group. It is intended solely for the addressees.
> Access to this E-Mail by anyone else is unauthorised. If you are not
> the intended recipient, any disclosure, copying, distribution or any
> action taken or omitted to be taken in reliance on it, is prohibited
> and may be unlawful. Any unauthorised recipient should advise the
> sender immediately of the error in transmission. Unless specifically
> stated otherwise, this email (or any attachments to it) is not an
> offer capable of acceptance or acceptance of an offer and it does not
> form part of a binding contractual agreement. Wood Thilsted Group
> comprises Wood Thilsted Partners Ltd, Wood Thilsted Ltd and Wood
> Thilsted Partners ApS.
The information in this E-Mail is confidential and may be subject to Non Disclosure Agreements (NDA). It may not
represent the views of the Wood Thilsted Group. It is intended solely for the addressees. Access to this E-Mail by
anyone else is unauthorised. If you are not the intended recipient, any disclosure, copying, distribution or any action
taken or omitted to be taken in reliance on it, is prohibited and may be unlawful. Any unauthorised recipient should
advise the sender immediately of the error in transmission. Unless specifically stated otherwise, this email (or any
attachments to it) is not an offer capable of acceptance or acceptance of an offer and it does not form part of a
binding contractual agreement. Wood Thilsted Group comprises Wood Thilsted Partners Ltd, Wood Thilsted Ltd and
Wood Thilsted Partners ApS.
3
4th July 2025
Data request application information needed for Estonian Navy and Defence
Police
1) Detailed data of the applicant (information about company and
representative of it)
OXAN ENERGY SAS / CEO NICOLAS PAUL -DAUPHIN on behalf of Saare 1 project
2) The reason of the data request, also who is the actual customer of the
data ? Data resolution, area and what kind of data.
On January 23rd 2025, Oxan Energy, a French-based offshore wind developer was awarded by the Estonian
Authorities (CPTRA/TTJA) an auction of the offshore zone Saare 1 for a 50 years lease, 60 km off the coast of
Saarema. Together with its partner SNOW B.V, Oxan Energy (hereafter the Company) will develop the ‘Saare 1’
offshore wind project which has a potential capacity of 900 MW.
The data is intended to support our early project development strategy by strengthening our understanding of the
site characteristics (seabed morphology, sub-seabed conditions, potential hazards, etc.) and subsequent preliminary
engineering. This will also inform the definition of future seabed survey requirements.
Mutli-beam echosounder data, side scan sonar data (if available) and seismic data over the offshore lease area and
potential cable routes would be of primary interest.
Wood Thilsted are working on behalf of Oxan Energy to carry out a site characterisation desk study for the offshore
zone. We would kindly request to receive processed Multi Beam Echo Sounder and Sub Bottom Profiler data
within the area of interest (AOI), shapefile (.shp) attached to the covering email.
We understand a consistent 4mx4m DTM resolution can be achieved across the area for the MBES (please advise if
a 1mx1m resolution is also achievable). We would like to recievve the best possible resolution of the data possible.
A tiled deliverable is acceptable, however should a merged DTM be avaliable for the AOI please could this also be
provided.
Please provide MBES bathymetry in gridded geoTiff format at the best possible resolution. If backscatter, TVU
(total vertical uncertainty), THU (total horizontal uncertainty) and TPU (Total Propagated Uncertainty), data is also
avaliable, please also provide in a geoTiff format. Please provide any bathymetric contours in .shp format.
If any MBES/backscatter targets or bedforms have been picked it would also be useful data to recieve.
Please provide any associated survey reports (if avaliable) including any details of the Seawater Velocity Profile
used for the processing, and any details about the processing methodology.
Where avaliable please provide:
Processed Multibeam Echosounder deliverable request
MBES sounding data .xyz Cleaned and corrected to datum.
Gridded at highest resolution possible possible while providing full
.xyz
MBES DTM coverage of the survey area, reduced to datum and produced by
.tif
gridding the swathe bathymetry data to a regular grid.
Bathymetric contours .shp At an appropriate interval, to be agreed.
Processed MBES Calculated data density, standard deviation, TVU, THU, TPU, and
.xyz
data bin cell difference grids at the same resolution(s) as the supplied
.tif
Statistics Grids MBES DTMs.
.xyz
MBES backscatter Backscatter image at highest resolution possible.
.tif
In Excel spreadsheets containing graphs and as plain text files
.xls stripped of trailing values. Data columns must include as a mini-
SVP documentation
.jpg mum depth sounding, recorded speed and corrected speed. Data
from both down- and up-going casts are to be included.
Tide documentation .jpg Description/image describing the tidal reduction method used.
Unique ID
Easting
Northing
Target list Target dimensions; length, width, height (m)
.xlsx
(from MBES and/or Description/interpretation
.shp
backscatter) where relevant, associated magnetic targets
Confidence (no. of lines seen on)
Source line name
Source file name
A report detailing Targets including an image presented in appropriate
Target Report .tif
scale
Raw and processed SBP data (full waveform), in time domain. Heave and datum-corrected, despiked navigation
with a unique co-ordinate pair for eachtrace and fully populated EBCIDICs. Data should be provided in .SGY
or .SEGY formats. Reports specifying the processing that has been undertaken and methodology where avaliable.
3) How the data will be treated, will they be published in any way ? If yes then
how, at which precision and which part ?
Data will be used to develop site models that will be used by the applicant in the development of the wind
farm. No external publication is planned.
4) Should the data be handed over to the third persons ? If yes then which
part and at which precision ?
The data available over the offshore lease area and potential cable routes should be handed over to
representatives of Wood Thilsted Partners Ltd at the best possible resolution.
Wood Thilsted Partners Limited (WT)
1st Floor, 91-94 Lower Marsh,
London, SE1 7AB
United Kingdom
Oliver Kean
Senior Geophysicist
Email:
[email protected]
Phone: +44 (0) 7476304151
Data would potentially be handed over to third parites in the future to support the site development, for example
seabed mobility consultants and cabling contractors.