ENHANCED SAFETY THROUGH THE USE OF REAL-TIME DYNAMIC

CHARTS OVERLAYS

Captain Jonathon PearceBusiness Development Manager

4th CMPA CongressNiagara Falls

Dynamic UKC Factors Review

SOMS UKC Concept Study

Recap: Dynamic UKC (DUKC®)

• Provides a consistent scientific approach to UKC management

• Utilises near real time and forecast environmental data (tides, waves, currents) and uses sophisticated ship modelling to calculate ship motions and UKC

• Rigorous application of PIANC guidelines and limits

• Effective mitigation of grounding hazards

• Implements a shared picture between ship and shore

• Extensive full-scale DGPS validation (>300 vessels)

Primary DUKC® Outcomes

• Enhanced decision making with transit plan accuracy

• Detailed reports Improved Master/Pilot Information Exchange

• Enhanced vessel scheduling/reduced channel conflicts

• Enhanced contingency planning

• Removes commercial pressures

• Maximises productivity and efficiency and

• Increased economic benefits

Win/Win - Productivity & Safety

• OMC’s evidence from existing studies show:

• 95% existing static rule conservative

• Potential for draught increases and/or productivity gains through increased tidal windows

• 4% existing static rule marginal

• Potential for a touch bottom incident. High risk but actual risk never quantified

• 1% existing static rule unsafe

• Very high potential for a touch bottom incident

Under most conditions a static rule will be conservative

However, groundings can occur when a ship is sensitive to the prevailing conditions (this is actual data!)

Case Study - Failure of Static Rule

A static rule won’t tell you when this is the case!

Conservative (95%)

Marginal(4%)

Unsafe(1%)

Marsden Point NZ, Groundings: Eastern Honor & Capella Voyager 2003

What is DUKC®? An example

Planning and Monitoring

Problem to be addressed

• How to deliver this data to a vessel/pilot in an easily understandable format

• Be integrated with navigation systems BUT must not detract from primary navigation requirements

• Use recognised concepts - GO/NO GO areas

• Still be available remotely (web) in case of failure

• Infrastructure required

Solution – Chart Overlays

DUKC® Chart Overlay

Marine Information Overlay for UKC

ECS dynamic depth contours DUKC® Chart Overlay

Based on static UKC allowance Based on dynamic UKC calculation

Shows live go / no-go Shows predicted go / no-go for ETAs, speeds and conditions along route

Dependant on resolution of ENC bathy Uses latest locally-sourced high resolution bathy

Computed on-board Computed on-shore and transmitted to vessel. Integrates environmental feeds.SHARED PICTURE VTS/VESSEL(pilot)

Delivery – Partners

OMC International – DUKC system and overlaysQPS – Qastor Connect server and navigation softwareNavicom Dynamics – PPU’s

Australian Hydrographic Services – Hydrographic servicesTelstra – 3G network and dedicated broadband services

Chart Overlays

Methodology1. High-resolution bathymetry of transit area

2. Create 2D Grid overlay (10m x 10m)

3. Compute DUKC® predictions of minimum keel elevations

4. In each grid cell compare the (nearest adjacent) predicted keel elevation with the depth at this location

5. Mark each grid cell as “pass” or “fail” (go/no go)

6. Produce real-time overlay (Web)

7. Promulgate overlay to users ECDIS/PPU

measured tide & currents

measured waves

measured wind & pressure

ship in given load state

latest sounded depths

8

ship speed envelopesastronomical tides

DUKC® Methodology

NOTE: Minimum depth anywhere in the DUKC®

“Bathymetry Node”

Minimum Keel Elevation

High-resolution bathymetry grid

Computing the 2D overlay

High resolution sounded depths

Minimum depth

10m x 10m overlay grid

DUKC®

Bathymetry Nodes

Compare DUKC® minimum keel elevation to overlay grid

cell depth

Chart Overlay Generation

Due to dynamic components:• Overlays are

unique to a vessel• Multiple vessels =

multiple overlays

Go – No Go (High Tide / Low Tide)

Dynamic Tide Contours Issues

Dynamic Tide Contours

Problem:This shows the state of tide now.

What is the actual tide be during transit?

Dynamic Tide Contours

Dynamic Tide Contours

Dynamic Tide Contours

Dynamic

but not

Predictive

Only

displaying

real tide

heights(via AIS or 3G

networks)

Predictive Tidal Plane

Composite tidal plane for whole

transit

Predictive Tidal Plane

With

Overlay

Predictive Tidal Plane

With

Overlay

Draught

and

dynamic

motions

applied

Predictive Tide Contours

With

Overlay

Speed

increased

(Squat)

No Overlay

Squat – Dead Slow Ahead

Squat – Slow Ahead

Squat – Half Ahead

Squat – Full Ahead

Squat – Full Sea Speed

Dynamic Tidal Changes – Chart Overlays

SOMS UKC Concept Study

Chart Overlays – In Operation

SOMS UKC Concept Study

MV SA Altius

Cape size Bulk Carrier 171,000DWT

Engine Failure

&

Prevented Grounding

Port Hedland Shipping Channel

2nd February 2014

Contingency Planning

Use of DUKC Series 5 allowed

on site interrogation of speeds

required to reach:

a) Emergency Anchorages

b) C1 and end of channel

This gave the onboard Pilots

an immediate plan.

The same transit information

was available via the Pilot’s

Portable Pilot Unit.

With the speed achieved by

towing, the vessel could be

towed to the Emergency

Anchorage at C7.

DUKC® assistance

Overlay automatically updated PPU

The extreme tide

contributed to

difficulties in

control of the

vessel, however

also ensured that

with use of

technology there

was water

available for a

safe, slow speed,

channel transit.

Information

Exchange

Shared Picture

Overlays and E-Navigation

DUKC® Overlays and e-Navigation

• Shared picture/Information Exchange (Shore and Ship)

• Enhanced navigation and informed decision making

• Readily understandable – Go/No Go overlays

• Ensured safety effective mitigation of grounding hazards

• Maximises productivity and efficiency and

• Increased economic benefits

• Effective contingency planningIALA 2014 AISM

Looking Forward

• Chart Overlays – S100 product specification and S100 conforming overlays

– ECDIS integration

• Communications– Vessel specific DUKC data (NMEA statements)

– VDES

– AIS Addressed Specific Messaging/ AIS Automation

• Data– Engagement with Hydrographic Offices TSMAD / TWLWG / DQWG

– Dynamic tides/ ENC gridded data sets

– Customised data sets

Final Note

Thank You

SOMS UKC Concept Study