Meritaito Ltd -”From Baltic Sea to Mareano”

Geodesy and Hydrography Conference in Sundvolden

15.11.-16.11.2017

Company backround:

Established 2010

100% state owned company

Part of former FinnishMaritime Administration

Hydrographic surveyingtraditions in Finland

Meritaito services:

Fairway Maintenance

Marine Constructions

Canals

Marine Surveys

Fairway Design

Oil Spill Response

Aids to Navigation

Hydrographic survey volumes:

From administrationto public enterpise 2010

Markets opened in Finland 2013

2017: >40% of sales frominternational projects

SBES -> LiDAR

Year Offshore

Multibeam

km2

Near Shore

Multibeam

km2

Inland

Multibeam

km2

Near Shore

Single beam

km2

Total

km2

2004 767 808 148 364 2 087

2005 813 882 193 632 2 520

2006 912 813 174 667 2 566

2007 822 982 253 501 2 558

2008 893 940 120 327 2 280

2009 369 855 188 196 1 608

2010 1 843 367 132 124 2 466

2011 1 202 352 307 201 2 062

2012 1 105 355 200 268 1 928

2013 3 917 748 308 159 5 132

2014 4 500 123 233 235 5 091

2015 7 372 368 287 8 027

2016 5 200 740 58 5 998

Route to Mareano:

NHS’ Dialog Conference 5/2015

MSV Letto modificationprogram (EM 2040D, sensoraligment, calibrations etc.)

Test surveys in Finland 8-10/2015

Mareano 2016:

Bid for Mareano 1/2016

Award of contract 2/2016

2nd vessel for option areas

MSV Pohjanmeri purchasefrom Navy 3/2016

Start of survey:

MSV Letto transit to Tromsø9.4.2016

Verification area survey18.4.2016

Operational survey started2.5.2016

MSV Letto in NS05 area:

Heavy swell -> high rolling(+/-15°)

Strong ocean currents

Strong drifting

High solar activity

MSV Letto in NS05:

High detailed bathymetricdata

”Worming” effect in backscatter imaginary data

Feedback for KongsbergMaritime

-> Survey lines for calibrationand correction procedure for the data

Transit to TOO area :

Area open of ice-> 30.5.2017

25-320m depths and new topography

No support for Glonass in Applanix PPP processing

Variation in sound speed

Biological objects in ”G02” :

Moving features

NHS & NGU analyses for the data

School of fishes?

Other 30-50m objects

Bathymetric data in TOO area:

Sensitive equipment with highfrequency

”Triangle” type of outliers

Iceberg furrows:-> outliers in slopes-> visible positioning errors

Feedback from The Client:

Need for reprocessing & corrections for the data

Revisions…

Delivery schedule?

2nd vessel MSV Pohjanmeri:

Disarming and installations

Co-operation with Navy

Delays at the dockyard…

Identical multibeam & positioning system

MSV Pohjanmeri to Too area:

MSV Pohjanmeri transit to Tromsø 29.7.2016

Verification area survey3.8.2016

Operational survey started8.8.2016

About MSV Pohjanmeri surveys:

High operability:-> Transition speed-> Bunker capasity-> Facilities

”Splattering” effect due to lightened bow

Transit to NS06 & NS05 areas2.9.2016

Good results with high surveyspeed

Summary of season 2016:

Ice melted early

Rough sea state -> down time

Difficulties with MBES installation

High quality of bathy data from the shallow areas

New specs and routines

Summary of season 2016:

Bugs and missing features in the softwares

Problems with bathy data in the deeper areas

Employees desire to learn new things!

MSV Pohjanmeri delays

Surveys behind the schedule-> continue 2017

Preparations for season 2017:

Updated location for MBES in MSV Pohjanmeri

”Gondola” type of intallation

Tight schedule for the surveys

New softwares for postprocessing

Summary of season 2017:

1 vessel with less down time

Better weather conditions

Ice coverage in TOO area-> substitute areas

Progress in surveyperformance!

Summary of season 2017:

Applanix RTX software for GNSS processing-> Glonass support

New processes for bathy data: -> Bugs solved in Qimera-> New filter for point data

Improved personnel

-> Data approvals

In the future:

Mareano 2018 depth zones?

EM 2040D for shallow areas

EM 712 investment for medium depths

”Coastal Mareano”?-> Facility Security Clearance