dynamic positioning in the unmanned vessel space
TRANSCRIPT
Dynamic positioning in the unmanned vessel space10 September 2021 • 09:00-09:45 BST
#offshoreenergy
Part ofOffshore EnergyWebinar Week6-10 September 2021Panellist documents
Page 2: Odd Magne Nesvåg, DNV Page 9:Michael King, Ocean InfinityPage 12: Richard Purser, IMCAPage 19: Andre Rose, IMCA
Autonomous and remotely operated ships.Trusted operations.
Odd Magne Nesvåg, Technical Responsible Ship Systems & Components Høvik
DNV ©
Content
• Rules and regulations – status and challenge
• Assurance case (CONOPS – safety/design philosophies – new technology)
• Operational issues (grade of autonomy, remote operation, minimum risk)
• New technology
2
DNV ©
Rules & Regulations
3
Rules & Regulations are missing
Flag states may grant exemptions
Exemptions require an assurance case
DNV ©
The assurance cases
• Concept Qualification
To obtain approval from the maritime
authorities of novel concepts which challenge existing statutory regulations.
• Technology or System Qualification
For verification of a safe implementation of novel (use of) technologiesin autonomous and/or remotely controlled vessel functions.
4
Technology orSystem
qualification
Technology
provider
Concept qualification
Concept
submitter
Flag/
costal
state
DNV GL
DNV ©
Concept of operation (CONOPS) and safety/design philosophy:
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Automation capabilityRemote supervision
and control
Minimum risk conditions
Communication
capacity and reliability
DNV ©
Test System for COLREG
6
Scenario Manager
Metocean
conditionsTraffic
Map
Vessel
configuration
Test Evaluation
COLREGS
Safety
Rules &
regulations
White box
White box
DIGITAL TWIN / Model
Black box
Vessel dynamics Radar Lidar
Camera IR
Gyro HPR
GPS MRU
Thruster
dynamics
Generator
dynamics
Hotel loads Ballast system
DP System
Situational
awareness
Autonomous
navigation
MotionSensorinput
OPERATING ENVIRONMENT SIMULATOR
Grey box
Wind
Waves
Current
Geographic
location
Interactive
traffic
situation
1
2
Alarms, actions
3
Scenario log
4
TEST MANAGEMENTSYSTEM
VIRTUAL WORLD
TE
ST
INT
ER
FA
CE
INTRODUCTION TO OCEAN INFINITY
OUR SERVICES
Safely completing detailed and precise mapping and survey tasks.
The best data, acquired and presented to the highest standards.
MAP INSPECT LOCATE SHUTTLE
Analysing subsea assets to provide accurate and detailed information.
The best way to inform decision making and planned maintenance.
World leaders in seabed search, salvage and subsea security.
The best chance of finding what you are looking for.
Movement of goods with zero people required at sea.
The best way to sustainably provide global logistical support.
OUR ROBOTS
INFINITY FLEETARMADA FLEET
ARMADA FLEET – ROBOTIC SHIPS
REMOTE CONTROL CENTRES
International Marine Contractors AssociationImproving performance in the marine contracting industry
Dynamic Positioning in the unmanned vessel spacePresenter Richard Purser
Venue Online
Date 10th September 2021
Autonomous DP System
©IMCA 2021
Fault Tolerance• Fault tolerance is a process that enables an operating
system to respond to a failure in hardware or software. Redundancy
• Redundancy is the ability of a component or system to maintain or restore its function when a single failure has occurred.
Predictability• Systems which exhibit predictable behavior allow for
easier development of contingency plans and compensating provisions.
Autonomous DP Systems must still have the following attributes:
Key Principals of a Fault Tolerant Design
©IMCA 2021
Detection• It is important to know when full fault tolerance has been lost.
Protection• There must be effective protective functions or features to prevent faults in
one system adversely affecting the operation of others Performance
• Performance means more than steady state capacity, it also includes dynamic performance, response time and accuracy.
©IMCA 2021
SO SAME OLD EXPECTATIONS APPLY
There will be Suspicious Minds
©IMCA 2021
Will start with low-risk activities – Survey – open water ASOG will be built into the software, remove human
ambiguity As confidence grows along with technology - move to
riskier operations – Light PSV work - StandbyWill grow much the same way DP has grown since its
first conception
What will Change
©IMCA 2021
• Regulation & Guidance• Greater sensory perception feeding into machine learning/AI• Greater data gathering and interpretation of data• Crew training for RCC operation• Equipment layout – not constrained for human use• Revolution in propulsion – no human interaction – use of fuels• Revolution in vessel design – no accommodation block• Environmental footprint
www.imca-int.com
Improving performance in the
marine contracting industry
International Marine Contractors AssociationImproving performance in the marine contracting industry
ROV and DP Operations
10 September 2021
Andy Rose, Technical Adviser
2
ROV Free flying (Freeboating)
3
ROV Tether Management System (TMS)
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ROV/USV Operations
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TMS – Without DP
Very low umbilical drag
Deploy close to worksite
Vessel motion (entering TMS)
Simpler Launch/Recovery
Entanglement
With DP
More Stable Vessel (entering TMS)
Less concern for umbilical position
Freeflying – Without DP
Tether drag (weather/current/weight)
Tether Buoyancy
Vessel motion
Depth/Distance from Worksite
Launch/Recovery
Weights/Floats
Entanglement
With DP
Less drag on tether
ROV Operations Considerations
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ROV Operations: Conventional v USV
©IMCA 2018
Similar Piloting arrangements but different location
Better home/work balance
No requirement to maintain ROV
Less travel
Similar operations to early ROV (No TMS)
Cost reduction (Food/accommodation/travel)
International constraints/travel requirements
www.imca-int.com
Improving performance in the
marine contracting industry