1. RESOLVE TECHNICAL EVENT & CONFERENCE
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RESOLVE TECHNICAL EVENT & CONFERENCE
AT “YACHT CLUB OF GREECE”, KASTELLA – PIRAEUS, WEDNESDAY

2. DAMAGE STABILITY

3. What is Damage Stability Analysis?
The process of evaluating the hydrostatic and structural properties of a vessel undergoing a condition it was not designed for
Allows responders to “test” multiple solutions to the problem at hand without risking life, environment or property.
Evaluate dangers for vessels’ progressive flooding and find effective ways to avoid vessels’ further immersion by adopting series of corrective and preventive actions.
Gives regulators/owners/clients the opportunity to evaluate and approve a salvage plan prior to making operational decisions.

4. Who needs damage stability?
Vessel interests
Ship owners
Hull Underwriters and P&I Clubs
Vessel management companies
Local Interests near casualty
Government both federal and state (pollution risk)
Enforcement agencies
Responders attempting to remedy the solution
Salvors

5. Who are the providers? Class Societies (ABS, DNV, LLOYDS, etc.…)
Select P&I Clubs
Select Naval Architect Firms
Select Salvage Companies (RESOLVE)

6. Provider Differences Capabilities Class Societies Select P&I
Evaluate Floating Conditions
Evaluate Ground Conditions
Salvage Solution
On Site Analysis
Convert Plan to Action
Capabilities
Class Societies
Select P&I
Loading Computer

7. Hurdles Encountered Time!
Drawings/Information: a. Shipyard, b.Owner, c. Class
Building the model
Getting accurate on-site information
Making timely decisions
To provide the vessel’s “electronic twin”, which as model should have the same drafts / trim / list as the actual drafts / trim / list of the damaged vessel.
To prepare a series of scenarios for the vessel’s remedial actions and check whatever consequences / results, plus their reliability.

10. Some clarifications – Part 1
Usually lines plan and body plan are not available, mainly for existing vessels, or shipbuilding yard refuses to provide copies.
Practically speaking, no problem: a series of vessel’s sections (transverse, longitudinal, plan-views) can be taken from the vessel’ structural plans.
Subsequent verification of hull form / vessel’s model should be made through comparisons with the hydrostatic data.
Even under these adverse circumstances, vessel’s model can be finalized within 2-3 days.
Most critical problem is the lack of “lightship distribution curve”, but even in this case such missing datum can be resolved.

11. Some clarifications – Part 2
Why is it so significant to study the vessel’s remaining stability and its residual strength (if hull is damaged)
 Who are the “beneficial parties” from the series of reliable and accurate Naval Architecture calculations and investigations?
 The role and the responsibilities of the onboard Advisory Group, for collecting data and particulars for vessel’s damages.
 Explain reasons why vessel’s damage stability program (as contained in loading instrument) cannot be used in actual emergencies.
 Characteristics and dimensions of the vessel’s hypothetical damage for the calculations as per the IMO “Stability Code”.
 Owners obligations to define precisely vessel’s modifications, changes and differences from sister-ships: possible verifications through photos and sketches.

12. Benefits for the Resolve clients:
Four (4) separate teams of very experienced Naval Architects are available in Fort Lauderdale / Resolve Headquarters, London, Singapore and Piraeus.
Needed time of 2-3 working days for the model configuration, in case lines plan and all necessary drawings are available (electronic form).
Full and direct communication – correspondence with the onboard advisory group.
No delays, no time differences and Naval Architects team work round the clock.
No need for the owners to pay any fees for the vessel’s model and/or to keep updated the vessel’s database.
Related expenses could be covered by respective LOF agreement signed with Resolve.

13. Case Study – MV SEAGATE – Port Au Prince, Haití

14. First Contact Initial Vessel Survey
Case Study
First Contact
Baseline information provided by the crew and ER team to allow the DS assessment to begin and decisions to be made.
Initial Vessel Survey
Type of Incident (grounding/collision/fire)
Location
Drafts (both before/after the incident)
Damage (severity/locations)
Loading condition
Machinery Capability/Status
Weather/Sea State

15. Information Gathering
Case Study
Information Gathering
Where we start the process…
Taking a detailed look at the casualty in the beginning is important to understand the scope of work required and constraints that will be needed to be taken into consideration during the solution phase 1
Get the ships plans (if available) 2
Build model and recreate pre-sail conditions 3
Take Tank Soundings and Draft Readings! 4
Recreate current condition and evaluate structural integrity and damaged stability

16. Model Constructed Vessel Plans GHS (General Hydrostatics)
Case Study
Model Constructed
Vessel Plans
GHS (General Hydrostatics)
Stability Booklet
Lines Plans (usually hard to get a hold of)
General Arrangement
Tank Capacity Plan
Hydrostatics
Fire and Safety Plan
Structural Drawings
Vents/Sounds or any piping schematics
Groundings
Damaged/Flooded Compartments Tanks
Longitudinal Strength (Global structure)
Intact/Damage Stability

17. 1 2 3 4 Initial Conditions Where we start solving the problem…
Case Study
Initial Conditions
Where we start solving the problem…
Taking a detailed look at the casualty in the beginning is important to understand the scope of work required and constraints that will be needed to be taken into consideration during the solution phase 1
Damage - Engine room is entirely flooded and breached. Missing structure on starboard side. 2
Cargo - Vessel is totally loaded with a few thousand tons of grain cargo. 3
Tank Status – Innages/Ullages taken on each tank to determine status. Intact vs Damaged 4
Freeboard measurements – Global strength intact? Hogging/Sagging? Will be able to evaluate ground reaction as well from this information if applicable

20. What’s the plan? Trim Vessel Forward Repair Damage
Ready Vessel for Towage
Deballast Water in Forward Cargo Holds
Monitor Watertight Integrity
Repair Damage
Source materials
Position small barge near damage
Weld Plates over Damage – Class Approval to Sail
Trim Vessel Forward
Lighter Aft Cargo Holds
Pump Water Into Forward Cargo Holds
Monitor Bending Stresses

21. (Re)Solution Process Compare to Alternative Set Initial Conditions
Case Study
(Re)Solution Process
Compare to Alternative
Set Initial Conditions
Compare the final condition to the previous conditions found. Identify actions that move closer to goal at hand.
Set the model’s conditions to the initial conditions seen by the naval architect
Evaluate Output
Alter Conditions
Determine if goal can be reached using this method.
Determine effects of moving cargo and ballasting tanks towards goal

22. SOLUTION FOUND Ballast Operations Check Bending Moments
Lightering of cargo
Temporary Patching and Repairs
Clean and Dewater the Engine Room
Stability confirmed and redelivered to the owners

23. TAKE ACTION!
The ability to turn a well thought out plan into an action is the key to a successful salvage operation.

24. TAKE ACTION!
The ability to turn a well thought out plan into an action is the key to a successful salvage operation.

25. SOLVED!
TAKE ACTION!
The ability to turn a well thought out plan into an action is the key to a successful salvage operation.

26. Thank you for your attention / Now time for questions & clarifications / Dimos Iliopoulos