NORBIT Subsea

NORBIT Subsea specialises in ultra-compact wideband multibeam sonars for subsea and surface platforms.

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Shipwreck and Quay Wall Survey

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WINGHEAD i79h datasheet
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NORBIT Partner Training Program

The survey described in this case study was made in connection with a NORBIT Partner training program, conducted by NORBIT engineers from Singapore and Norway.

This training aimed to equip NORBIT’s Partner PT Hidronav Tehnikatama to serve as NORBIT’s exclusive partner in Indonesia, handling sales, technical services, and warranty support.

Certified participants were those who completed the course and demonstrated proficiency, ensuring that NORBIT customers receive appropriate sales support from qualified personnel.

Introduction

As part of the course syllabus, a field survey was conducted in Tanjung Priok, Jakarta Bay, on 29th August 2024, using the NORBIT WINGHEAD i79h multibeam sonar.

The survey covered a submerged wreck and a heavily sedimented quay wall section.Utilising the portable NORBIT PORTUS Pole, the installation and system configuration took just over an hour.

The shipwreck was located approximately two nautical miles northeast of the port, at a depth of less than 10m.The quay wall, constructed on the eastern side of the port in 2014, showed significant sediment build up at its base, as captured by the high-resolution WINGHEAD i79h dataset.

WINGHEAD i79h Multibeam Sonar System

The NORBIT WINGHEAD i79h sonar is the first cylindrical ultra-high resolution curved array bathymetric system, designed for rapid anywhere, anytime mobilisation featuring the highest standard industry-leading integrated GNSS/INS positioning. With a compact ultra-high resolution curved array broadband multibeam sonar offering tight integration with GNSS/INS (Applanix Oceanmaster) that is designed for use in the most demanding operational environments such as under bridges or in rough sea conditions.       

WINGHEAD i79h
  • Multibeam Sonar with Integrated Inertial Navigation System & Integrated NTRIP Client
  • Backscatter Outputs (Intensity, Sidescan, Snippet Sidescan, Snippets, Water Column
  • Roll Stabilisation
  • Multidetect & Pipeline Mode
  • Integrated Sound Velocity Probe
  • 1024 Dynamically Focused Beams
  • FM & CW Processing
  • Exceeds IHO Exclusive Order & USACE New York

Installation

Installation at PT.JPPI Shipyard, Indonesia. 
Sonar was mounted at the port side of the vessel with both Antenna 1 & Antenna 2.
Installation & configuration took just over an hour using the NORBIT PORTUS Pole.
Fugro Marinestar corrections were interfaced with the system in real time. 

Vessel Spec:

Length Overall (LOA): 16m
Breadth Overall (BOA): 3.2m
Gross Tonnage: 110 tons
Net Tonnage: 80 tons
Height: 5.6mDraft: 1.5m

Results

Processed data of shipwreck
Processed data of shipwreck
Quay Wall Above Sea Level (Photo) & Quay Wall Below Sea Level (by NORBIT WINGHEAD i79h)
Quay Wall Above Sea Level (Photo) & Quay Wall Below Sea Level (by NORBIT WINGHEAD i79h)

The WINGHEAD i79h multibeam sonar was able to detect the partly disintegrated half buried wreck in high resolution to generate an overall point cloud for visualisation.

With the WINGHEAD i79h swath angle of 210°it was possible to electronically beam steer the swath angle towards sea level above the WINGHEAD i79h draft to scan the whole quay wall from sea level to seabed, without any mechanical tilting of the MBES head.