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Welaptega Marine

3D Video, 3D Modelling, Mooring Chain Inspection and Rope Measurement for Subsea Assets

Welaptega Marine is a world leader in underwater inspection technologies, specialising in risk management for offshore installations. Welaptega's innovative technologies allow operators to evaluate the integrity of their underwater assets and make informed engineering decisions regarding operational safety.

Summit Place,
1601 Lower Water Street,
Halifax, Nova Scotia,
Suite 107,
B3J 3P6,

Welaptega Marine is a world leader in underwater inspection technologies, specialising in risk management for offshore installations. Welaptega’s innovative technologies allow operators to evaluate the integrity of their underwater assets and make informed engineering decisions regarding operational safety.

Technology for rapid response to underwater damage and the inspection of moorings, risers and pipelines

Welaptega specialises in both rapid response to underwater damage events, and in integrity verification through regular inspection of moorings, risers, and pipelines. Technology includes:

  • High-definition video (HD3DV). The offshore industry’s highest visual acuity
  • 3D modelling (3DM). Geometrically accurate modelling of asset condition
  • Chain measurement system (CMS ). Class required chain measurement metrics
  • Rope measurement system (RMS). Rope surface condition and diameter measurement
  • Mechanical caliper. Ad-hoc ROV based measurement capability
  • Welaptega’s underwater and onshore measuring technologies allow operators to not only determine the condition of their assets but to implement a best practice asset integrity management
  • Welaptega’s survey capabilities and technologies meet international industry standards and are certified by Lloyds’ Register and Det Norske Veritas.

Underwater HD3DV and 3DM technologies provide state-of-the-art visualisation of underwater assets on offshore instillations

HD3D video for underwater images

Welaptega’s HD 3DV camera system is deployed by ROV to capture high-definition 3D video footage of subsea components. Video can be viewed in 3D in real-time during inspections and ROV operations. Video can also be reviewed ‘on the beach’ following an offshore operation. High quality 3D allows operators to identify damage such as gouges and pitting.

Welaptega 3D video (3DV™) gives clear, real-time footage of underwater components on offshore installations.
Welaptega’s chain measurement system (CMS) is deployed by ROV to survey mooring chains in-situ.
Welaptega’s 3D modelling (3DM) produces high-resolution stereoscopic models to identify, diagnose and repair problems underwater.
FGA graphic link.
Welaptega Marine’s Subsea survey capabilities and underwater inspection technologies meet industry standards and have received DNV’s approved services supplier certificate. .

Stereoscopic video provides ROV operators with greater spatial perception for real-time manipulator work, allowing tasks to be completed more quickly and with greater precision.

Welaptega’s HD3DV system is rated for subsea deployment to 3000m.

3DM for high-resolution, geometrically accurate models

3DModelling uses advanced photogrammetric techniques to generate geometrically accurate 3D models of components from 2D digital still images. Corresponding pixels are identified between overlapping photos, and geometry is calculated through a series of iterations based on the pixel’s relative positions. 3D models are scaled with respect to the known offset between cameras or an object of known dimensions placed on the component.

Resulting 3D models represent component geometry with accuracy typically within 1mm, and can be measured to quantify critical dimensions such as ovality, alignment between planar surfaces, cross-sectional areas, and gouge depths, widths, and heights. 3D models can also be exported in formats compatible with finite element method software packages for stress / strain analysis.

If a repair is required, the 3D model can be exported to industry-standard computer-aided design (CAD) packages so that a custom design can be created to fit the damaged geometry.

Resulting models can also be 3D printed to produce prototypes, mock-ups for subsea workscope operations planning, or for display purposes.

Chain management system for measurement of intergrip diameters of subsea morning chains

Welaptega’s chain measurement system (CMS) is an ROV-deployed optical calliper that measures the link intergrip diameters of in-service subsea mooring chain. Welaptega provides operators with measurements that indicate how much material loss has occurred due to deterioration, such as corrosion or wear. Results are compared to industry standards and classification society inspection rules and industry guidelines.

Advantages of using Welaptega’s CMS for mooring inspection include:

  • Chains remain in-service during inspection; no shutdown in production or deck recovery required
  • Visual inspections of individual links are performed both during data capture and when data is processed
  • A comparison to previous inspection results is provided in Welaptega’s reports to identify trends in corrosion or wear patterns, allowing more accurate replacement budgeting

Rope measurement system for monitoring in-service condition of materials

Welaptega’s rope measurement system (RMS) is a unique method for monitoring in-service condition of fibre or wire rope moorings.

It is deployed by work class ROV to survey the in-service condition of fibre and wire rope moorings. Comprising a built-in cleaning system and a hydraulic sled equipped with video cameras, the RMS is towed along a rope to remove marine growth and capture video from four directions.

The video data is then processed to detect changes in the cross-sectional geometry over the length included in the survey. These measurements indicate potential rope deterioration, which could lead to mooring line failure.

Mooring System Inspection Philosophy

Permanently installed, long term moorings have been used in the offshore industry for a relatively short period of time when compared against their history of usage with mobile offshore drilling units (MODUs).

Na Kika Oil and Gas Fields, Gulf of Mexico

The Na Kika field extends over Missisipi Canyon blocks 474, 429, 657, 607, 522, 520, 383 at a water depth of 6,000ft in the Gulf of Mexico, approximately 225km south-east of New Orleans, Louisiana, US.

Tordis IOR Project, Norway

Tordis is located in block 34/7 of the Tampen area in the Norwegian North Sea. It came on-stream in 1994. In addition to

Mad Dog Field

The Mad Dog field is located in Western Atwater Foldbelt, Gulf of Mexico, approximately 190 miles south of New Orleans,

Alvheim Field, Norway

The Alvheim field lies on the Norwegian Continental Shelf, west of Heimdal, in production licence PL 203.

Petro-Canada oilfield project

The Terra Nova field is located 350km east-south-east (ESE) of St John's Newfoundland and 35km south-east of Hibernia.

Jotun Oil and Gas Field Project

The Jotun field is located on the Utsira High, between the Balder and Heimdal fields, approximately 200km west of Stavanger, Norway.

Balder Oil and Gas Field Project, Norway

Balder is located in blocks 25 / 10 and 25 / 11, 165km west of Haugesund, in a water depth of 125m. The field was discovered in 1967, but it was only during the appraisal drilling in 1974 that the major part of the field was discovered.

Welaptega to Discuss Aging infrastructure at OTC

Welaptega Marine, world leader in moorings fitness for purpose assessments (MFPA), is attending the Offshore Technology Conference (OTC) in Houston this week to deliver a paper on life extension of mooring systems on offshore floating production facilities.

8 May 2013

Welaptega Announces Agent in China

Welaptega Marine, world leader in mooring inspection and fitness-for-purpose evaluations, is pleased to announce that the Beijing Safetech Pipeline Company has been appointed as its exclusive sales and operational agent for China.

20 December 2012

Sense of Urgency Erupts Around Ageing Infrastructure, Says Welaptega CEO

A new sense of urgency is emerging around ageing offshore infrastructure as facilities reach the end of their design lives and major incidents cost millions - in some cases billions, a group of integrity management experts heard during a Petronas seminar titled Managing Risk on Ageing Offshore Infrastructure.

18 October 2012

Shell Awards Welaptega Mooring Integrity Contract for Anasuria

Welaptega Marine, world leader in mooring integrity verification, is pleased to announce that it has been awarded a contract to inspect the mooring systems on the Anasuria floating, production, storage and offloading vessel (FPSO) in the UK North Sea.

2 October 2012

Welaptega at the Emerging FPSO Forum, Texas

Welaptega Marine, world leader in mooring integrity verification, will join FPSO experts from around the world this week at the Emerging FPSO Forum in Galveston, Texas, to discuss unexpected problems discovered during subsea surveys.

25 September 2012

Welaptega Awarded Patent for Rope Measurement System

Welaptega Marine, a world-leader in underwater inspection on offshore installations, is pleased to announce that it has been awarded a patent, by the US Patent and Trademark Office, for its Rope Measurement System (RMS).

22 May 2012

Welaptega Marine to Visit OTC 2012

Welaptega Marine is set to attend the 2012 Offshore Technology Conference, which takes place between 30 April and May 3 2012 at the Reliant Center in Houston, Texas, US.

18 April 2012

Welaptega CEO: “Don’t Forget – Lives Were Lost”

This comment by Welaptega founder and CEO Anthony Hall is a response to a Wall Street Journal story carried on the US President's report on the Macondo spill. "Do not forget the lives lost in this incident. Do not forget that in pursuit of the petroleum that fuels our societies many tho

5 January 2011

Welaptega to Present OTC Paper on In-Service Inspection of MODU Moorings

Welaptega Marine, world leader and exclusive supplier of in-water mooring inspection and subsea 3D in the offshore oil and gas industry, has been selected by the Offshore Technology Conference (OTC) Houston to present a paper on a pioneering technology for recertifying moorings on mobile drill ri

3 May 2010

Welaptega Saves MODU Client Millions with Pioneering Inspection Technology

Welaptega Marine has saved a Gulf-of-Mexico-based offshore driller millions of dollars through a pioneering technology to re-certify mooring systems on semi-submersible drill rigs (MODUs) while they are on station. It is estimated that the driller saved $10m in maintenance costs on one

11 November 2009

Welaptega Marine

Summit Place
1601 Lower Water Street
Halifax, Nova Scotia
Suite 107
B3J 3P6

Welaptega Marine UK Ltd

Unit 107, Bourtree Complex
Minto Drive
Altens Industrial Estate
AB12 3LW
United Kingdom


Dataran Hamodal, Block B,
Level 2, No. 4, Jalan Bersatu 13/4
46200 Petaling Jaya
Selangor Darul Ehsan,

Accpron A/S

Karmsundsgata 72, N-5501

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