Sea Grant College Program
Massachusetts Institute of Technology Cambridge, Massachusetts 02139 Project No. 2008-ESRDC-01-LEV
ARCHITECTURAL MODEL TO ENABLE POWER SYSTEM TRADEOFF STUDIES (PPT presentation)
C. Chryssostomidis, J. Chalfant, D. Hanthorn, et al.
A
rchitectural Model to
A
rchitectural Model to
Eb
l
P
S
Eb
l
P
S
E
na
bl
e
P
ower
System
E
na
bl
e
P
ower
System
Tradeoff
Studies
Tradeoff
Studies
Tradeoff
Studies
Tradeoff
Studies
Chrys ChryssostomidisChrys Chryssostomidis
Julie Chalfan
t
Julie Chalfan
t
JJ
GoalGoalGoalGoal
Overall architectural model for an
all
Overall architectural model for an
all--electric shi
p
electric shi
ppp
FullyFully--integrated physicsintegrated
physics--based simulation of electrical, based simulation of electrical,
hydrodynamic, thermal, and structural components of hydrodynamic, thermal, and structural components of ship
operating
in
seaway
ship
operating
in
seaway
ship
operating
in
seaway
.
ship
operating
in
seaway
.
An earlyAn
early--stage design tool capable of performing stage design tool capable of performing
tradeoff studies on concepts such as tradeoff studies on concepts such as
A
C vs.
DC distribution
A
C vs.
DC distribution
frequency and voltage levelfrequency and voltage level
dt
ti
dt
ti
energy an
d power managemen
t op
tions
energy an
d power managemen
t op
tions
effect of
arrangements and
topology
effect of
arrangements and
topology
MetricsMetricsMetricsMetrics
W
ei
gh
t
W
ei
gh
t
gg
VolumeVolume
Efficiency/Fuel
C
onsumption
Efficiency/Fuel
C
onsumption
Efficiency/Fuel
Consumption
Efficiency/Fuel
Consumption
CostCost
Reliability (Quality of Service)Reliability (Quality of Service)
Survivabilit
y
Survivabilit
y
Naval
Architecture
M
odel
Naval
Architecture
M
odel
Naval
Architecture
Model
Naval
Architecture
Model
Begin with balanced design of ship envelope, bulkheads, decksBegin with balanced design of ship envelope, bulkheads, decks
Zonal arrangement of major equipmentZonal arrangement of major equipment
Zonal distribution of systemsZonal distribution of systems
Tool used: ParamarineTool used: Paramarine
Very
high
level
model
but
can
m
onitor
usual
naval
architecture
Very
high
level
model
but
can
m
onitor
usual
naval
architecture
Very
high
level
model
but
can
monitor
usual
naval
architecture
Very
high
level
model
but
can
monitor
usual
naval
architecture
Distributed
System
Model
Distributed
System
Model
Distributed
System
Model
Distributed
System
Model
Pa
ramarine
Distributed
System
Model
Distributed
System
Model
Distributed
System
Model
Distributed
System
Model
Sim
ulink
Distributed
System
Model
Distributed
System
Model
Electrical LoadsElectrical Loads
Distributed
System
Model
Distributed
System
Model
PropulsionPropulsion
RadarRadar
Distribution Distribution
Pulsed WeaponPulsed Weapon
Load Centers in each zoneLoad Centers in each zone
Energy
Storage
Energy
Storage
SystemSystem
Zonal DistributionZonal Distribution
Energy
Storage
Energy
Storage
Ring Bus (initially)Ring Bus (initially)
Load Centers modeled as Load Centers modeled as lump
parameters
lump
parameters
lump
parameters
lump
parameters
Damage
Model
Damage
Model
Damage
Model
Damage
Model
Center
and
radius
Center
and
radius
Center
and
radius
Center
and
radius
Anything within radius
is
destroyed
Anything within radius
is
destroyed
Tb
k
fi
d
d
i
l
i
Tb
k
fi
d
d
i
l
i
T
race systems
bac
k to
first un
damage
d
iso
lat
ion
T
race systems
bac
k to
first un
damage
d
iso
lat
ion
pointpoint
Overall
Architectural
Model
Overall
Architectural
Model
Overall
Architectural
Model
Overall
Architectural
Model
Notional
Ship
Notional
Ship
Notional
Ship
Notional
Ship
Paramarine
Design
Paramarine
Design
Paramarine
Design
Paramarine
Design
Began
w
ith
a
balanced
low
Began
w
ith
a
balanced
low
--level
F
rigate
design
level
F
rigate
design
Began
with
a
balanced
low
Began
with
a
balanced
low
level
Frigate
design
level
Frigate
design
Initial power requirementsInitial power requirements
80MW
P
l
i
80MW
P
l
i
80MW
P
ropu
ls
ion
80MW
P
ropu
ls
ion
37MW Estimated future electric
loading
37MW Estimated future electric
loading
6 vertical
zones
6 vertical
zones
At least
1 PGM per zone
(except
1
At least
1 PGM per zone
(except
1 –
–E
SM
?)
ESM?)
Zonal
and
Machinery
L
ayout
Zonal
and
Machinery
L
ayout
Zonal
and
Machinery
Layout
Zonal
and
Machinery
Layout
Design Challenges/Possible Design Challenges/Possible
SolutionsSolutions
Gas
turbine
exhaust
fore
and
aft
Gas
turbine
exhaust
fore
and
aft
Gas
turbine
exhaust
, fore
and
aft
Gas
turbine
exhaust
, fore
and
aft
Diesels would give more flexibilityDiesels would give more flexibility
Moving
the
bridge
location
Moving
the
bridge
location
Moving
the
bridge
location
Moving
the
bridge
location
Restricting Helo operationsRestricting Helo operations
PMM
l
PMM
l
PMM
p
lacemen
t
PMM
p
lacemen
t
Survivability
M
etric
Survivability
M
etric
Survivability
Metric
Survivability
Metric
Mana
geable sco
pe
Mana
geable sco
pe
-useful in earl
y sta
ge desi
gn
useful in earl
y sta
ge desi
gn
gpgp
yg
g
yg
g
Prioritizing loads:Prioritizing loads:
Survive the
damage
Survive the
damage
Ct
i
t
t
Ct
i
t
t
C
on
tinue
to opera
te
C
on
tinue
to opera
te
Perform its
mission
Perform its
mission
Can be applied to:Can be applied to:
Electrical PowerElectrical Power
Chill waterChill water
SeawaterSeawater
Vi
l
i
Vi
l
i
V
ent
ilat
ion
V
ent
ilat
ion
Changes in fidelity of analysis by altering
level of system
Changes in fidelity of analysis by altering
level of system
Electric Load Priorit
y
Electric Load Priorit
yyy
1. Power
Generation
1. Power
Generation
PGMs and required
auxiliaries
PGMs and required
auxiliaries
9. Full
Flight
Operations
9. Full
Flight
Operations
All flight
equipment incl. refueling
All flight
equipment incl. refueling
2. Damage Control2. Damage Control
Fire fighting,
dewatering, IC
Fire fighting,
dewatering, IC
3. Basic Mobility3. Basic Mobility
4kt
l
i
d
t
i
t
4kt
l
i
d
t
i
t
10. Increased
Offense
10. Increased
Offense
Medium Radar,
addl weapons
Medium Radar,
addl weapons
11.
Increase Speed to 20
knots
11.
Increase Speed to 20
knots
12
Mi
ll
M
h
i
l
12
Mi
ll
M
h
i
l
4kt
propu
ls
ion an
d s
teer
ing sys
tem
4kt
propu
ls
ion an
d s
teer
ing sys
tem
4. Self
Defense
4. Self
Defense
Sufficient sensors
and
weapons
Sufficient sensors
and
weapons
5.
Exterior
Communications
5.
Exterior
Communications
12
. Mi
sce
llaneous
M
ec
han
ica
l systems
12
. Mi
sce
llaneous
M
ec
han
ica
l systems
Compressors, RO units,
etc.
Compressors, RO units,
etc.
13. Full
Offense
13. Full
Offense
Full
Radar,
hi
Full
Radar,
hi
--energy
weapon
energy
weapon
5.
Exterior
Communications
5.
Exterior
Communications
All excommsAll excomms
6. Helo
and Boat Recovery
6. Helo
and Boat Recovery
Lights, RAST,
boat davits
Lights, RAST,
boat davits
Full
Radar,
hi
Full
Radar,
hi
energy
weapon
energy
weapon
14.
Increase Speed to 25
knots
14.
Increase Speed to 25
knots
15. All non15. All
non--vital loadsvital loads
Laundry, Galley,
heat,
etc.
Laundry, Galley,
heat,
etc.
7.
Increase Speed to 10 knots
7.
Increase Speed to 10 knots
8. Basic Offense8. Basic Offense
Min Radar,
weapon, ship control
Min Radar,
weapon, ship control
syssys
16. Increase
to
Maximum
Speed
16. Increase
to
Maximum
Speed
syssys
Proposed Survivability
Tiers
Proposed Survivability
Tiers
AShip
lik
ely
to
be
lost
w
ith
the
loss
of
ov
er
25%
embark
ed
personnel
AShip
lik
ely
to
be
lost
with
the
loss
of
ov
er
25%
embark
ed
personnel
BShip
lik
ely to be lost
with the loss
25% or under embark
ed
personnel
CDoes not
meet P
ow
er Generation
and Damag
e
Control
-S
hip's status
is
lik
ely to
contin
ue
to
deg
rade
contin
ue
to
deg
rade
DMeets P
ow
er
Generation
and Damag
e
Control-Ship
is able to
combat existing
damag
e but is
vulnerable to fur
ther threats
.
EM
B
i
M
bili
d
S
lf
D
f
Ib
l
i
i
lf
i
h
EM
eets
B
as
ic
M
obili
ty an
d
Se
lf
D
ef
ense
-Is a
bl
e to susta
in
itse
lf
ag
ai
nst t
he enem
y.
FMeets Exterior Comm
unications
and Helicopter
and Boat
R
eco
ve
ry
-B
asic
functionality without
offense
.
GMeets
Increased
Speed, Basic
Offense
-C
an perfor
m
at
least
one primar
y mission
HMeets Full Flight
Operations
and Increased Offense
-C
an
perfor
m
most or all
primar
y missions
IMeets Increased
Speed, Mec
hanical Ser
vices and Full Offense
-A
s
far as
a militar
y
asset, unaffected
JCom
plete
functionality
-all loads are filled
Survivability
C
alculation
Survivability
C
alculation
––
First
M
etric
First
M
etric
Survivability
Calculation
Survivability
Calculation
First
Metric
First
Metric
Highest
tier
achieved
w
hile
also
meeting
lower
Highest
tier
achieved
w
hile
also
meeting
lower
Highest
tier
achieved
while
also
meeting
lower
Highest
tier
achieved
while
also
meeting
lower
tier requirementstier requirements
To
meet
the
tier
requirements
the
B
oolean
To
meet
the
tier
requirements
the
B
oolean
To
meet
the
tier
requirements
the
Boolean
To
meet
the
tier
requirements
the
Boolean
statement must
be
satisfied
statement must
be
satisfied
Ep
l
t
tS
lf
D
f
Ep
l
t
tS
lf
D
f
E
xam
pl
e
to mee
t S
elf
D
ef
ense:
E
xam
pl
e
to mee
t S
elf
D
ef
ense:
SeaRAM
OR sensor AND
decoy system
SeaRAM
OR sensor AND
decoy system
Exam
ple to meet Tier E:
Exam
ple to meet Tier E:pp
Self Defense AND
Basic
Mobility AND
Tier
D
Self Defense AND
Basic
Mobility AND
Tier
D
--i
mplies implies
Survivability
C
alculation
Survivability
C
alculation
––
Second
Metric
Second
Metric
Survivability
Calculation
Survivability
Calculation
Second
Metric
Second
Metric
Total
load
value
of
all
system
loads
that
can
be
Total
load
value
of
all
system
loads
that
can
be
Total
load
value
of
all
system
loads
that
can
be
Total
load
value
of
all
system
loads
that
can
be
servicedserviced
Uses
surviving
G
enerators
and
loads
along
with
Uses
surviving
G
enerators
and
loads
along
with
Uses
surviving
Generators
and
loads
along
with
Uses
surviving
Generators
and
loads
along
with
surviving connectivity
to return a weighted
score
surviving connectivity
to return a weighted
score
Survivability
M
etric
C
alculation
Survivability
M
etric
C
alculation
Survivability
Metric
Calculation
Survivability
Metric
Calculation
Calculation
process
Calculation
process
Calculation
process
Calculation
process
Dijkstra’s algorithmDijkstra’s algorithm
linear
programming
linear
programming
linear
programming
linear
programming
Four examplesFour examples
full operationfull operation
large PGMs
isolated
large PGMs
isolated
zones isolatedzones isolated
zone 4
damaged
zone 4
Dijkstra
’s
A
lgorithm
Dijkstra
’s
A
lgorithm
Dijkstra
s
Algorithm
Dijkstra
s
Algorithm
calculates the lowest wei
ght
path
calculates the lowest wei
ght
path
gpgp
from
a
single node to each other node
from
a
single node to each other node
in
a
directed
weighted
graph
in
a
directed
weighted
graph
in
a
directed
, weighted
graph
in
a
directed
, weighted
graph
Linear
Programming
Linear
Programming
Linear
Programming
Linear
Programming
find the maximum
of
find the maximum
of
f * xf * x
hh
ff
i
th
i
ht/p
i
it
f
filli
l
d
i
th
i
ht/p
i
it
f
filli
l
d
w
here
w
here
ff
ii
is
th
e we
ig
ht/p
ri
or
ity o
f
filli
ng
loa
d
is
th
e we
ig
ht/p
ri
or
ity o
f
filli
ng
loa
d
xx
ii
subject to linear constraints such that subject to linear constraints such that
ll
i
d
b
ll
i
d
b
≤≤
hi
f
hi
f
tota
l power supp
lie
d
by a generator
tota
l power supp
lie
d
by a generator
≤≤
th
e capac
ity o
f
th
e capac
ity o
f
the generator, the generator,
the
total
power
supplied
to
a
load
the
total
power
supplied
to
a
load
≤≤
the
size
of
the
the
size
of
the
the
total
power
supplied
to
a
load
the
total
power
supplied
to
a
load
≤≤
the
size
of
the
the
size
of
the
load, load,
a
generator onl
y su
pp
lies
power to a
load for which
a
generator onl
y su
pp
lies
power to a
load for which
gy
pp
p
gy
pp
p
connectivity exists
between the
generator and
the
connectivity exists
between the
generator and
the
load. load.
Ring Bus with ZEDSRing Bus with ZEDS
Zl
L
d
Zl
L
d
Z
ona
l L
oa
d
Z
ona
l L
oa
d
Centers Centers
Pro
pulsion
Pro
pulsionpp
RadarRadar
Full
Operation
Full
Operation
Full
Operation
Full
Operation
Sur
vi
vability
T
ier
J:
C
omplete
functionality
Sur
vi
vability
T
ier
J:
C
omplete
functionality
--allall
Sur
vi
vability
Tier
J:
Complete
functionality
Sur
vi
vability
Tier
J:
Complete
functionality
--all
all
loads are filledloads are filled
S
i
bilit
S
=
100%
S
i
bilit
S
=
100%
Sur
vi
va
bilit
y
Score
=
100%
Sur
vi
va
bilit
y
Score
=
100%
Full
Operation
Full
Operation
Full
Operation
Full
Operation
STBD PORTSTBD PORT 1 2 3 4 5 6 PULSE RADAR PMM PMM 1 2 3 4 5 6 PULSE RADAR PMM PMM POWER GENE 100 100 100 100 100 100 POWER GENE 100 100 100 100 100 100 -POWER GENE 100 100 100 100 100 100 POWER GENE 100 100 100 100 100 100 DC 100 100 100 100 100 100 DC 100 100 100 100 100 100 --BASIC MOBILITY BASIC MOBILITY
-- 100 100 -- 100 100 -- ----100 ----100----100 ----100 SELF DEFENSE 100 100 100 100 SELF DEFENSE 100 100 100 100 100 100 -- ----EXCOMMEXCOMM ----100 100 100 100 -EXCOMM EXCOMM 100 100 100 100 HELO/BOAT HELO/BOAT -- 100 100 -- 10 KTS 10 KTS -- 100 100 --BASIC OFFENSE 100 100 100 100 100 100 BASIC OFFENSE 100 100 100 100 100 100 100 100 -- ----FULL F LIGHT OPS FULL F LIGHT OPS -100100 -FULL FLIGHT OPS FULL FLIGHT OPS 100 100
INCR OFFENCE 100 INCR OFFENCE 100
100 100 100 100 -- 100 100 -- 20 KTS 20 KTS -- 100 100 -- ----100 ----100----100 ----100 MISC MECH 100 100 100 100 100 100 MISC MECH 100 100 100 100 100 100 -- ----FULL O FFENSE FULL O FFENSE -100 100 100 100 100 100 100 100 -FULL OFFENSE FULL OFFENSE 100 100 100 100 100 100 100 100 25 KTS 25 KTS -- ----100 ----100----100 ----100 NONNON--VITAL 100 100 100 100 100 100 VITAL 100 100 100 100 100 100 --
MAX SPEED MAX SPEED
-- ----100 ----100----100 ----100
Large
P
GMs
Isolated
Large
P
GMs
Isolated
Large
PGMs
Isolated
Large
PGMs
Isolated
Survivability
T
ier
I:
M
eets
Increased
Speed
Survivability
T
ier
I:
M
eets
Increased
Speed
Survivability
Tier
I:
Meets
Increased
Speed
,
Survivability
Tier
I:
Meets
Increased
Speed
,
Mechanical Services and
Full
Offense
Mechanical Services and
Full
Offense
--A
s f
ar
a
s
As far as
a
m
ilitary
asset
unaffected
a
m
ilitary
asset
unaffected
a
military
asset
, unaffected
a
military
asset
, unaffected
Survivability Score =
92%
Survivability Score =
92%
Large
P
GMs
Isolated
Large
P
GMs
Isolated
Large
PGMs
Isolated
Large
PGMs
Isolated
STBD PORTSTBD PORT 1 2 3 4 5 6 PULSE RADAR PMM PMM 1 2 3 4 5 6 PULSE RADAR PMM PMM POWER GENE 100 100 100 100 100 100 POWER GENE 100 100 100 100 100 100 -POWER GENE 100 100 100 100 100 100 POWER GENE 100 100 100 100 100 100 DC 100 100 100 100 100 100 DC 100 100 100 100 100 100 --BASIC MOBILITY BASIC MOBILITY
-- 100 100 -- 100 100 -- ----100 ----100----100 ----100 SELF DEFENSE 100 100 100 100 SELF DEFENSE 100 100 100 100 100 100 -- ----EXCOMMEXCOMM ----100 100 100 100 -EXCOMM EXCOMM 100 100 100 100 HELO/BOAT HELO/BOAT -- 100 100 -- 10 KTS 10 KTS -- 100 100 --BASIC OFFENSE 100 100 100 100 100 100 BASIC OFFENSE 100 100 100 100 100 100 100 100 -- ----FULL F LIGHT OPS FULL F LIGHT OPS -100100 -FULL FLIGHT OPS FULL FLIGHT OPS 100 100
INCR OFFENCE 100 INCR OFFENCE 100
100 100 100 100 -- 100 100 -- 20 KTS 20 KTS -- 100 100 -- ----100 ----100----100 ----100 MISC MECH 100 100 100 100 100 100 MISC MECH 100 100 100 100 100 100 -- ----FULL O FFENSE FULL O FFENSE -75 75 93 72 75 75 93 72 -FULL OFFENSE FULL OFFENSE 75 75 93 72 75 75 93 72 25 KTS 25 KTS -- ----0 ----0----0 ----0 NONNON--VITAL 0 0 0 0 0 0 VITAL 0 0 0 0 0 0 --
MAX SPEED MAX SPEED
-- ----0 ----0----0 ----0
Zones
Isolated
Zones
Isolated
Zones
Isolated
Zones
Isolated
Sur
vi
vability
Tier H: Meets Full Flight
Sur
vi
vability
Tier H: Meets Full Flight
Operations and
Increased Offense
Operations and
Increased Offense
--C
an
Can
perfor
m most or all primar
y missions
perfor
m most or all primar
y missions
Sur
vi
vabilit
y Score =
73%
Sur
vi
vabilit
y Score =
73%
yy
Zones
Isolated
Zones
Isolated
Zones
Isolated
Zones
Isolated
STBD PORTSTBD PORT 1 2 3 4 5 6 PULSE RADAR PMM PMM 1 2 3 4 5 6 PULSE RADAR PMM PMM POWER GENE 0 100 100 100 100 100 POWER GENE 0 100 100 100 100 100 -DC 0 100 100 100 100 100 DC 0 100 100 100 100 100 --BASIC MOBILITY BASIC MOBILITY
-- 100 100 -- 100 100 -- ----100 ----100 ----100 ----100 SELF DEFENSE 0 100 100 100 SELF DEFENSE 0 1 00 100 100 100 100 -- EXCOMM EXCOMM --100 --100 --100 --100 - - -HELO/BOAT -HELO/BOAT -- 100 100 -- 10 KTS 10 KTS -- 100 100 --BASIC OFFENSE 0 100 100 100 100 100 BASIC OFFENSE 0 100 1 00 100 100 100 100 100 --
FULL FLIGHT OPS FULL FLIGHT OPS
-1 00 100
-INCR OFFENCE 0 -INCR OFFENCE 0
100 100 100 100 -- 100 100 -- 20 KTS 20 KTS -- 100 100 -- ----100 ----100 ----100 ----100 MISC MECH 0 100 100 100 100 100 MISC MECH 0 100 100 100 100 100 --
FULL OFFENSE FULL OFFENSE
-1 00 100 0 100 1 00 100 0 100 -25 KTS -25 KTS -- ----100 ----100 ----100 ----100 NONNON--VITAL 0 100 100 100 100 100 VITAL 0 100 1 00 100 100 100 --
MAX SPEED MAX SPEED
-- ----35 81 ----35 81
Zone
4
D
amaged
Zone
4
D
amaged
Zone
4
Damaged
Zone
4
Damaged
Sur
vi
vability
Tier I: Meets
Increased
Speed,
Sur
vi
vability
Tier I: Meets
Increased
Speed,
Mec
hanical Ser
vices and
Full Offense
Mec
hanical Ser
vices and
Full Offense
--A
s f
ar
a
s
As far as
a militar
y
asset, unaffected
a militar
y
asset, unaffected
Sur
vi
vabilit
y Score =
94%
Sur
vi
vabilit
y Score =
94%
yy
Zone
4
D
amaged
Zone
4
D
amaged
Zone
4
Damaged
Zone
4
Damaged
STBD PORTSTBD PORT 1 2 3 4 5 6 PULSE RADAR PMM PMM 1 2 3 4 5 6 PULSE RADAR PMM PMM POWER GENE 100 100 100 0 100 100 POWER GENE 100 100 100 0 100 100 POWER GENE 100 100 100 0 100 100 POWER GENE 100 100 100 0 100 100 -DC 100 100 100 0 100 100 DC 100 100 100 0 100 100 --BASIC MOBILITY BASIC MOBILITY
-- 100 100 -- 100 100 -- ----1 00 100 1 00 100 SELF DEFENSE 100 100 100 0 SELF DEFENSE 100 100 100 0 100 100 -- ----EXCOMMEXCOMM 100 100 100 100 EXCOMM EXCOMM --100 100 100 100 -HELO/BOAT -HELO/BOAT -- 100 100 -- 10 KTS 10 KTS -- 100 100 --BASIC OFFENSE 100 100 100 0 100 100 BASIC OFFENSE 100 100 100 0 100 100 100 100 -- ----FULL F LIGHT OPS FULL F LIGHT OPS 100100 FULL FLIGHT OPS FULL FLIGHT OPS -100 100
-INCR OFFENCE 100 -INCR OFFENCE 100
100 0 100 0 -- 100 100 -- 20 KTS 20 KTS -- 100 100 -- ----1 00 100 1 00 100 MISC MECH 100 100 100 0 100 100 MISC MECH 100 100 100 0 100 100 -- ----FULL O FFENSE FULL O FFENSE 100 100 100 100 100 100 100 100 FULL OFFENSE FULL OFFENSE -100 100 100 100 100 100 100 100 -25 KTS -25 KTS -- ----1 00 100 1 00 100 NONNON--VITAL 100 100 100 0 100 100 VITAL 100 100 100 0 100 100 --
MAX SPEED MAX SPEED
-- ----28 100----28 100
SummarySummarySummarySummary
Overall
A
rchitectural
Model
Overall
A
rchitectural
Model
Overall
Architectural
Model
Overall
Architectural
Model
Notional ShipNotional Ship
Distribution S
ystem
Distribution S
ystemyy
Damage ModelDamage Model
MetricsMetrics
TwoTwo--fold Survivability
Metric
fold Survivability
Metric
Survivabilit
y Tiers
Survivabilit
y Tiersyy
Backup
Slide
Backup
Slide
Backup
Slide
Backup
Slide
Proposed Survivability
Tiers
Proposed Survivability
Tiers
A Ship likely to be lost with the
loss of over 25% embarked
personnel
B
S
hip likely to be lost with the
loss 25% or under embarked personnel C Does not meet Power G eneration and Damage Control -Ship 's s tatus is likely to c ontinue to degrade C Does not meet Power Generation and Damage Control Ship s status is likely to continue to degrade D
Meets Power Generation and Dama
ge Control-Ship is able to combat exis ting damage but is vulnerable to
further threats. Minimum requirements:
one oper
ational generator with
associat
ed auxiliaries, two
firepumps.
Meets Basic
Mobility and Self
Defense
-Is
able to
sustai
n itself against the enemy
. E M inimum requireme nts: achieve 4 knots
with steering, one se
lf-defense system (either a CIWS/SeaRAM or a sensor and associated missile decoy system). F Meets Exterior Communications and Helicopter
and Boat Recovery
-B
as
ic functionality
without of
fense.
Minimum requirements: one operational
mo de of exterior communications, close-in radar , able to recover helicopter and boat. G
Meets Increased Speed and Basic
Of
fense
-C
an perform at
least one primary mission
Minimum requirements:
operate at
10 knots, perform
one primary mission.
H
Meets
Full Flight Operations
and Increased
Of
fense
-C
an perform mo
st or all primary missions
Minimum requirements:
flight
operations,
two primary missions
I
Meets Increased
Speed, Mechanical
Services and Full
Of fense -A s far as a military asset, unaf fected Minimum requirements: power to all loads at this level and below J Complete functionality -a
ll loads are fulfilled
Minimum requirements:
fulfill
all loads, including
