Korean Register

Service

Item Prepared for ERS Registration
- 1. In case of ships assigned with KR ERS notation, the following data are inputted and stored into the database, so that a prompt activation of KR ERS program can be made possible in an emergency situation.
  
  1. Hull Offset data (Hull form data) input [Ref. to Fig. 1~2]
  
  Hull form date input
  
  Fig.1) 301K VLCC Body Plan
  
  Fig.2) Moss Type LNG Carrier
  
  2. Compartment Offset data input [Ref. to Fig. 3~7]
  
  watertight compartment form data input
  
  Fig.3) FPT of LNG Carrier
  
  Fig.4) No1. Cargo Tank of LNG Carrier
  
  Fig.5) Defined Tanks Arrangement of LNG Carrier
  
  Fig.6) Tanks Arrangement of 5500TEU Container
  
  Fig.7) Tanks Arrangement of 161K Bulk Carrier
  
  3. Section Modulus Editor (Ref. to Fig. 8)
  
  Fig.8) Midship Section of VLCC
  
  4. Ship Data Input (Ref. to Fig. 9~10)
  
  Light Ship Data (Weight, Center) input
  
  Input a specific character of cargos and tanks
  
  Hydrostatic Table input manually/automatically
  
  Cross Curves input manually/automatically
  
  Bonjean Table input manually/automatically
  
  Required GM Curves input manually/automatically
  
  Light Weight Distribution data input
  
  Allowable Strength (S.F/B.M, SAG/HOG, SEA/HARBOR) data input
  
  Section Modulus Data input manually/automatically
  
  Fig.9) Light Ship Define Mode
  
  Fig.10) Light Weight Distribution
- 2. By using the basic data stored into the database, ERS team carries out following calculations through salvage program in advance.
  
  Hydrostatic and Bonjeandata Cross curves data Trim and stability summary in intact condition
Available Analysis by Using KR's Salvage Program
- 1. Intact Loading Condition(Ref. to Fig. 11∼14) Salvage program can check over the intact stability and longitudinal strength like the loading computer used onboard.
  
  1. Cargo(Tank, Bulk, Container) loading condition input
  
  2) Using the storage data in Ship Data Entry, following calculations is done.
  
  Trim & Stability
  
  GZ
  
  Longitudinal Strength (S.F , B.M)
  
  Fig.11) Tank & Cargo Weights Entry Mode
  
  Fig.12) Trim & Stability Summary
  
  Fig.11) Tank & Cargo Weights Entry Mode
  
  Fig.12) Trim & Stability Summary
- 2. Salvage Response (Ref. to Fig. 15~19)
  
  This is the main function of Salvage Program. Salvage Program calculate residual stability, buoyance, longitudinal strength and oil outflow etc, in case of casualties - flooding, stranding and structural damage - , and establish the most effective salvage countermeasure.
  
  1 Using the intact loading data before the accident
  
  2. Input a damaged condition such as damaged compartment and structural damage include their
  
  location : Salvage program simulate the real accident situation in way of the damaged data (Flooding, stranding, etc) input. Structural damages are also made in the corresponding transverse section.
  
  Fig.15) Specify Damage Compartments
  
  Fig.16) Specify Structural damage
  
  Fig.17) Free floating after damage
  
  Fig.18) Damage and strand
  
  3. Wave and Wind Condition Input
  
  Wave
  
  - Salvage Program can calculate the wave height, wavelength and wave position(hogging, sagging)
  
  - consider the wave condition at the place that accident happen. If the sea condition is the real extreme case, the program consider the real wave height, 90~100%L wavelength and sagging condition.
  
  Fig.19) Considering Wave
  
  Wave
  
  - Salvage program can consider the effect of wind applied to the side projected plane of the ship. The program need to input a wind speed, coefficient of resistance, wind pressure, area and arm etc.
  
  4. Following Condition is able to calculate
  
  Free Floating
  
  One Pinacle
  
  Two Pinacle
  
  Shelf Stranding
  
  Stranding after tidal change
  
  5. Calculation Summary
  
  Stability after Damage
  
  Strength after Damage : It can consider displacement and bucking align the longitudinal hull direction.
  
  Outflow/Flooding in Compartment
  
  Oil Outflow
  
  6. It is possible to compare and examine the salvage procedure
Technical Review of Salvage Plan
- To adjust the excessive trim or heeling cause of flooding or stranding and to guarantee a sufficient stability, or to refloat the stranded ship, follwoing actions should be taken.
  
  Ballasting or de-ballasting
  
  Weight(Oil) Transfer: The weight(oil) or ingress water(ballast water) shall be transferred to other place in the ship by using the available piping system or crane, etc.
  
  Lightering: The weight(oil) or ingress water(ballast water) shall be transferred outboard by using the available piping system or crane, etc.
  
  Maintaining the constant air-pressure in damaged compartment: In case of bottom damage, the pressurized air should be flowed into flooded compartment to reserve the compartment buoyance. It can be possible to use the equipment.
  
  Tidal Change: If the ship is stranded, tidal change is very important. Considering this point help to find the minimum(optimum) way to refloat.