STABILITY
ANALYSIS
- DAMAGED SHIP
MTC/DAMSTAB.si (v2000.04) S/N:xxxxxxxx
---------------------------------------------------
PART I: INITIAL CONDITION - INTACT SHIP
DISPLACEMENT
= 85.00 ton
Ro
= 1.0250 ton/m^3
DRAFT AT
LCF
= 1.02 m
WATERPLANE
AREA
(ARWL) = 94.13 m^2
TONS/cm
IMMERSION
= 0.96 ton/cm
VERTICAL
C.G
(uncorrected)
= 2.00 m
CORRECTION
FOR
FREESURFACE MOM. =
0.04
m
VERTICAL C.G
(corrected)
(KG) = 2.04 m
TRANSVERSE META
CENTER (KMt)
= 24.45 m
METACENTRIC
HEIGHT
(GMt) = 22.41 m
LONGITUDINAL
Cf
(LCF) = 11.59 m
LONGITUDINAL
Cb
(LCB) = 11.90 m
LONGITUDINAL
Cg
(LCG) = 11.90 m
TRANSVERSE
Cb (TCB)
= 0.00 m
TRANSVERSE
Cg (TCG)
= 0.00 m
LONGITUDINAL
META
CENTER (KML) =
50.88 m
TRIM (+ve by
stern)
= 0.04 deg
MOMENT TO
TRIM
1 DEG (MT1d)
= 74.68 m.ton/deg
XMT1F
= 4151.38 m.ton/m
HEEL (+ve by
Starboard)
= 0.00 deg
MOMENT TO
HEEL
1 DEG (MH1d)
= 33.25 m.ton/deg
YMT1F = 1905.24 m.ton/m
DRAFT,
forward
(Hf) = 1.01 m
DRAFT,
aft
(Ha) = 1.02 m
---------------------------------------------------
PART II: MARGIN LINE DESCRIPTION
Margin
line is below the bulkhead deck as described in
the hull
model
and documented in the following table:
-X- -HT@S-
-HML- -BML-
(m)
(m)
(m) (m)
0.000 3.048
2.972 6.096
2.316 3.048
2.972 6.096
4.633 3.048
2.972 6.096
6.949 3.048
2.972 6.096
9.266 3.048
2.972 6.096
11.582
3.048 2.972 6.096
13.899
3.048 2.972 6.096
16.215
3.048 2.972 6.096
18.532
3.048 2.972 6.096
20.848
3.048 2.972 6.096
23.165
3.048 2.972 6.096
LEGEND:
X : DISTANCE FROM XREF
HT@S
:
HEIGHT OF BULKHEAD DECK AT SIDE
HML : ML HEIGHT 762mm BELOW THE BULKHEAD DK @ SIDE
BML : ML DISTANCE FROM CENTER LINE TO BULKHEAD DK @
SIDE
---------------------------------------------------
PART III: CREDIT VOLUME
CREDIT
VOLUME IN
WAY OF COMPARTMENT FLOODING:
ITEM
NO. VOL
XG
YG
ZG DENS
(m^3)
(m)
(m) (m)
(kg/m^3)
NO CREDIT
VOLUME
FOR THIS CASE
---------------------------------------------------
CASE NO. 1A
UNSYMMETRICAL FLOODING
BETWEEN: STN#1 - STN#3
PART IV: Regulatory criteria for evaluation
(1) LONG. EXTENT = 1-COMPARTMENT
(2) VERT. EXTENT = BULKHEAD DECK
(3) TRANSV. EXTENT = 1/5 B
PART V: ITERATIVE SOLUTION PARAMETERS
Tolerance
for
volume match (TOLV) = 0.829
m^3
Tolerance
for
LCG match (TOLX)
= 0.290
m
Tolerance
for
TCG match (TOLB)
= 0.122
m
CASE NO.
1A
UNSYMMETRICAL FLOODING
BETWEEN: STN#1 - STN#3
---------------------------------------------------
PART VI: BASIC COMPARTMENT PROPERTIES IN -INTACT-
CONDITION
NO. OF STNS
USED
TO DESCRIBE COMPARTMENT (NSDT) = 3
NO.
XAFP
AREA
VMt
TMt
PERMC
(m) (m^2)
(m.t) (m.t)
1
2.32 8.37
16.00 32.92 0.95
2
4.63 8.37
16.00 32.92 0.95
3
6.95 8.37
16.00 32.92 0.95
COMPARTMENT
VOLUME
(CVOL)
= 38.79 m^3
CAPACITY IF
COMPLETELY
FILLED (COMPWT) =
39.76
ton
LCG FROM
XAFP
(CXCG)
= 4.63 m
VCG ABOVE
RRWL
(CVCG)
= 1.81 m
TCG FROM
CENTER
LINE
(CTCG)
= 3.93 m
---------------------------------------------------
PART VII: HULL OPENINGS FOR DOWN-FLOODING
No. of
Openings = 2
No. .....XOP
......YOP
......ZOP
1 3.150
5.790 3.048
2 18.150
5.950 3.048
---------------------------------------------------
PART VIII: SHIP IN FINAL CONDITION FOLLOWING
FLOODING
(*)
CASE NO. 1A
UNSYMMETRICAL FLOODING
BETWEEN: STN#1 - STN#3
DISPLACEMENT IN FINAL
CONDITION
= 85.00 ton
NO OF
ITERATIONS
FOR SOLUTION
=
35
LONG.
CENTER OF GRAVITY,
LCG
= 11.90 m
LONG. CENTER
OF
GRAVITY,
LCB
= 11.90 m
TRANS.
CENTER OF GRAVITY,
TCG
= 0.06 m
TRANS.
CENTER OF
BUOYANCY, TCB
=
0.06 m
VERTICAL
CENTER
OF GRAVITY, VCG
=
2.04 m
TRANS.
METACENTER,
KMt
= 22.93 m
LONG.
METACENTER
KMl
= 46.47 m
NOTE: (*)
Initial
values in final condition
using principles of LOST BUOYANCY
FLOODING
DATA:
FLOODED
WATER
IN THE
COMPARTMENT
=
10.74 ton
LCG OF
FLOODED
WATER
= 4.61 m
VCG OF
FLOODED
WATER
= 0.52 m
TCG OF
FLOODED
WATER
= 4.60 m
DRAFT,
FP, at
side
= 1.18 m
DRAFT, AP,
at
side
= 1.04 m
TRIM
ANGLE
= -0.35 deg
HEEL
ANGLE
= 1.69 deg
RESIDUAL
METACENTER
(GMt)
= 20.89 m
RESIDUAL
RIGHTING
ARM
(GZ)
= 0.00 m
RESIDUAL
FREEBOARD
= 1.61 m
DISTANCE
FROM
FP
= 0.00 m
HEEL ANGLE
TO
SUBMARGE MARGIN LINE
= 14.78 deg.
INCLUDES ALLOWANCE FOR SLACK TANKS FREESURFACE MOMENTS
STABILITY
ANALYSIS
- DAMAGED SHIP
MTC/DAMSTAB.si (v2000.04) S/N:DAM200020
23 m
Catamaran - FLD CASE 1A (DAMDATA.DAT) 11/10/2000
---------------------------------------------------
PART IX: RIGHTING ARMS (GZ) vs. HEEL ANGLES (Phi)
CASE NO. 1A
UNSYMMETRICAL FLOODING
BETWEEN: STN#1 - STN#3
AT CONSTANT DISPLACEMENT AND TRIM
Phi Tcg
Tcb GZ
Lcg Lcb Disp PDF
(deg) (m)
(m) (m)
(m) (m) (ton) (deg)
0.00 0.00 -0.49
-0.49 11.90 12.19
85.00
5.00 0.18 1.48
1.31 11.90 12.19 85.00
10.00 0.35 3.48
3.13 11.90 12.19 85.00
15.00 0.53 4.72
4.19 11.90 12.19 85.00
20.00 0.70 4.82
4.12 11.90 12.19 85.00
25.00 0.86 4.80
3.94 11.90 12.17 85.00
30.00 1.02 4.74
3.72 11.90 12.15 85.00
35.00 1.17 4.65
3.48 11.90 12.13 85.00
40.00 1.31 4.52
3.21 11.90 12.13 85.00
45.00 1.44
4.36
2.92 11.90 12.13 85.00 -*DF*-
50.00 1.56 4.16
2.60 11.90 12.12 85.00 -*DF*-
55.00 1.67 3.93
2.27 11.90 12.10 85.00 -*DF*-
60.00 1.76 3.68
1.91 11.90 12.08 85.00 -*DF*-
Note: PDF
is
the heel angle (Phi) at which down-flooding
occurs (-*DF*-) through the hull openings identified
in PART VII of result.
Plot of righting arms vs. heel angles, following damage. IMO
crireia is depicted
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