Dynamic positioning in the unmanned vessel space

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

DNV ©DNV ©

www.dnv.com

Autonomous and remotely operated ships.

7

[email protected]

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)

4

ROV/USV Operations

5

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