1. FLOODING OVERVIEW FLOWCHART
External
Investigation
of Flooding
Flooding
Fluid
Temperature
Ensure
Personnel Don
Protective Clothing
Before Entering
Space for
Extended
Periods
Low Temp
Poses Exposure Threat
to Personnel
Yes
Compartment
Above
Waterline
Yes
Set FLBs,
Isolate Flooding
Dewater with
Installed Drains No No
Send
Investigators
Into Space
Determine
Depth of
Flooding
Internal
Investigation of
Flooding
Level
Approaching
Overhead
Secure Space
Set FLBs
Yes No
Flooding from
Structural
Damage
Yes
Go to
Chart “1”
Structural
Damage
Rate of
Flooding No
Flooding
from Pipe
Rupture
Yes
Go to
Chart “2”
Pipe
Rupture
Flood Before
Source
Determined
Yes
Secure Space
Set FLBs No
Investigate
Nearby
Compartments
Expand FLBs No
Flooding from
Progressive
Flooding
Yes
Set FLBs
on Affected
Compartment No
Isolate
Source of
Flooding
Source of
Flooding
Go to
Chart “3”
Dewatering
Dewater
Space
Yes
Determine
Source/Type
of Fluid No
Monitor Ship
Stability, Continue DC
Actions, Investigation
Electrical
Power in
the Space
Electrical
Power Poses Threat
to Personnel
Secure
Space, Set
FLBs
Yes
Determine Availability
of Off-Ship Repair/
Salvage Teams No

2. - FLOODING FROM STRUCTURAL DAMAGE
CHART 1
- FLOODING FROM STRUCTURAL DAMAGE
Flooding from
Structural Damage
Set FLBs
(if not set)
Survey
Flooding
Source
Continue with
Flooding from
Structural/Damage
Path & Pipe
Rupture Path
Caused by
Structural Damage/
Pipe Ruptures
Yes No
External
Isolation
Isolate without
Sending Personnel
into Space
Yes
Conduct
External
Isolation No
Evacuate
Space &
Securing
Compartment
Depth of
Water Prevents
Access
Yes No
Patch/Plug
Flooding
Source
Dewater while
Patching/Plugging
in Progress
Shoring
Required for
Plugging
Yes
Go to
Chart “4”
Shoring No
Structural
Strength
Compromised
Yes
Go to
Chart “4”
Shoring No
Monitor Stability/Structural
Integrity; Continue DC Actions/
Investigation of Damage

3. CHART 2 - PIPE RUPTURE JP5 CHT Hydraulic Fluid Lube Oil
Flooding from
Pipe Rupture
Set FLBs
(if not set)
Fluid Type/
Characteristics
(Type/Temperature/Pressure)
Yes
Hazardous
Fluid?
Hazardous
JP CHT Hydraulic Fluid Lube Oil
Fuel Oil Steam Refrigerant No
Don Personnel
Protective
Equipment
Rupture
Location, Size,
Extent
Simultaneously
Use Chart “3”
Dewatering
Redirect
or Cover
Fluid
Can
Rupture
Be Isolated with
Installed
Valves?
Can
System Supplying
Pressure to The
Piping Be
Secured
Go to
EOSS,
SDOSS,
MSFD No No
Unisolatable
Rupture
Yes
Yes
Is the
System Supplied
by the Piping
a Vital System that
Must Stay On
Line?
Secure
Pressure
Source
Yes
Apply Patch No
Other
System
Pressure
Isolate Rupture
with Valves
Shut
Additional
Valves No
Was
Isolation
Effective?
Yes
Will
Repair Be
Permanent or
Temporary?
Temporary
Restore
System, Check
for Leaks
Apply
Patch
Permanent
Conduct
Permanent Repair
When Time Permits

4. CHART 3 - DEWATERING Space Requires Dewatering Dewater Effectiveness
Isolate Flooding
Source/Establish
FLBs
Secure
Source/
Compartment if
Source Cannot
Be Isolated
Flooding Level
Comparable to Ship’s
Waterline
Yes
Establish
Dewatering
Priorities No
Secure
Source,
Augment
Dewatering
Equipment
Water
Level
Increasing
Yes
Installed
Dewatering Systems
Available
Yes
Use
Installed
Dewatering
System No No
Water
Level
Decreasing
Yes
Augment
Dewatering
Equipment
Firemain
Available
Yes
Dewater
Using
Portable
Eductors No No
Monitor
Ship’s Stability
Electrical
Power
Secured
Dewatering
Adversely Affects
Ship’s Stability
Yes
Reexamine
Stability/
Dewatering
Priorities
Repair
Personnel Evacuate
Space
Yes
Rig
Electrical
Submersible
Pumps No No
Continue
Dewatering/Restore
Vital System
Extra
Personnel Required
to Operate
Pumps
Yes
Obtain
Additional
Personnel
Monitor Stability/Structural
Integrity; Continue DC Actions/
Investigation of Damage No
Dewater
Using P100 or P250
Portable Pumps

5. CHART 4 - SHORING Structural Damage Determine Shoring Type Can Direct
Compression
Be Used?
Yes
Use I or H
Shore No
Determine
Anchor
Points
Use K
Shore
Build Additional
Anchor Supports
Rapid
Support
Required
Yes
Use
Metal
Shores No
Use Wood
Shores
Determine
Staging/Cutting
Area
Erect Wood,
Metal, or
Combination
Support/Anchor
Structure
Additional
Support Structure
Required?
Yes No
Measure/
Cut Shores
Erect
Structure
Tighten
Structure
Set
Shoring Watch