TJ-079-02 Rev C Damage Stability_97300935_97516072.pdf

Drawing Nu

Author umber TJ‐

Marine O

DA

NOA

‐079‐02

Operatio

AMAG

AA SH

Revisio ons Cente

GE STA

f

HIP TH

n C er, 2002 SE M

ABILIT

for the

HOMA

Marine Science

TY AN

e

AS JEF

e Drive, Newp

NALYS

FFERS

Date port, OR 9736

SIS

SON

9/6/16

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

NOAA Ship Thomas Jefferson Drawing Number Rev Date Page

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 2 of 24

CONTENTS

REVISIONS

REFERENCES

DEFINITIONS

GENERAL NOTES

VESSEL CHARACTERISTICS

MARGIN LINE

LONGITUDINAL EXTENT OF DAMAGE

CROSS‐FLOODING

DAMAGE PATTERNS

CALCULATION OF MINIMUM GMT REQUIRED

LOADING CONDITIONS

Damage Pattern 1

Damage Pattern 2

Damage Pattern 3

Damage Pattern 4

Damage Pattern 4a

Damage Pattern 5

Damage Pattern 5a

Damage Pattern 6

Damage Pattern 6a

Damage Pattern 7

Damage Pattern 8

MINIMUM GMT REQUIRED

MAXIMUM ALLOWED KG (FEET, VIRTUAL)

APPENDIX: RUN FILE

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 3 of 24

REVISIONS

Revision Date Page Description

- 09/26/2005 Initial issue

A 05/31/2006

AAA/EDS

1. General revision to include revised light ship characteristics resulting from installation of tunnel bow thruster, transducer fairing, and tankage mod completed at Detyens Shipyard Inc, No. Charleston, SC in March 2006.

2. Changed ref (d), was drawing 6623610; General Arrangement Hold Flats.

Deleted reference (e), renumbered remaining references to suit.

3. Modified reference (e) to cite revised geometry file.

4. Revised principal characteristics and hydrostatic properties to suit.

5. Modified damage patterns incidental to bow thruster installation & tankage changes.

6. Recomputed maximum allowed KGv and GM required incidental to revised hydrostatics & tankage changes. Modified graphs of minimum GMt required to suit.

7. Replaced GHS run file in appendix with that used in recomputing max allowed KGv.

B 04/06/2009

SSI/JEK

1. General revision to include revised light ship characteristics resulting from stability test completed at Detyens Shipyards Inc, No. Charleston, SC in

February 2009.

2. Added reference (g) for loading conditions and reference (h) for additional damaged stability regulations.

3. Updated cross-flooding connection info based on FY 2009 installation.

4. Modified required GM curve to incorporate limits from reference (h).

5. Added damaged stability condition summary.

6. Removed required GMt without cross-flooding graph.

7. Modified run file to incorporate updated geometry file.

C 08/01/2016

NOAA/

GDMW

1. Reformatted for consistency with Tank Capacity and Soundings Rev. D

2. Updated tank configuration per 2016 drydock work.

3. Moved Condition Summary to Trim & Stability Booklet to remove dependence of document on light ship mass properties; removed T&S

Booklet from References.

4. Updated GHS run file in appendix with that used in recomputing max allowed KGv.

5. Changed zero-trim draft range to 9’ to 14’ to better bound lightship and load line displacements.

REFERENCES

a) 46 CFR 171.080(e)(1)

b) Dwg 6634640; HULL LINES

c) Dwg 6634641; TABLE OF OFFSETS

d) Dwg TJ-085-002, Rev E; BOOKLET OF GENERAL PLANS (pending)

e) Geometry File: Jefferson.gf7

f) Dwg TJ-079-01, Rev C; INTACT STABILITY ANALYSIS (pending)

g) Marine Safety Center Technical Note MTN 02-95

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 4 of 24

DEFINITIONS

B Beam

BL Baseline

CFR Code of Federal Regulations

CL Centerline

FP Forward Perpendicular (longitudinal origin)

FR Frame (spacing = 2 feet, 0 at FP)

GMt Transverse metacentric height

KG Height of center of gravity above keel

(baseline), same as VCG

KGv Virtual height of center of gravity above keel, considering free surface effects of liquids aboard

KMt Transverse metacentric height above keel

(baseline)

LBP Length between perpendiculars

LCF Longitudinal center of flotation (longitudinal center of waterplane area)

LCG Longitudinal Center of Gravity (feet from FP, positive aft)

LT SW Long tons (2240 pounds) salt water (35 cubic feet per long ton)

TCG Transverse Center of Gravity (feet from centerline, positive to starboard)

VCG Height of center of gravity above keel

(baseline), same as KG

GENERAL NOTES

The following analysis demonstrates compliance with damage stability standards of 46 CFR Subchapter U.

Unless identified otherwise all drafts, depths, and other vertical coordinates are measured from the baseline.

Throughout this drawing trim is measured in feet over the length between perpendiculars (LBP) of 190 feet.

Tanks are assumed to be empty prior to damage. Therefore, there are no restrictions of liquid loading to satisfy damage stability standards.

VESSEL CHARACTERISTICS

Length Overall 208'‐ 2 1/4"

Length Between Perpendiculars 190'‐ 0"

Beam, molded 45'‐ 0"

Depth, molded amidship (12� Aft of Fr 47) 22'‐ 9"

Loadline Draft (summer, molded) 14'‐ 0"

MARGIN LINE

THOMAS JEFFERSON has a continuous bulkhead deck

(Main Deck) with an average shear less than 12�.

Therefore, in accordance with 46 CFR 171.015(b), the margin line is a parabolic curve, as shown in the following sketch:

a. 3" below the Main Deck edge at the stem, then

b. 9" below the Main Deck edge at amidships FR

47.5, then

c. 3" below the Main Deck at the transom.

LONGITUDINAL EXTENT OF DAMAGE

Per 46 CFR Table 171.080(A) as a category Z vessel the longitudinal extent of damage is 10 feet plus 0.03LBP with no damage to any main transverse watertight bulkhead. 46 CFR 170.055(i)(1) defines LBP as the waterline length at the deepest operating draft. For this analysis the deepest operating draft is taken as 14� 0", at which the waterline length is 190 feet. Thus the rule minimum bulkhead spacing is 15.70 feet (= 10 + 0.03 * 190.00).

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 5 of 24

CROSS‐FLOODING

During the FY 2009 repair period, cross‐flooding connections were installed for the following tank pairs: FO‐4‐

34‐1/ ‐2, BLST‐4‐43‐1/ ‐2, and FO‐4‐55‐3/ ‐4. The cross‐flooding connections were installed per reference (g);

the connection between the tank pair FO‐4‐55‐3/ ‐4 is automatic, and the connections between the tank pairs

FO‐4‐34‐1/ ‐2 and FO‐4‐43‐1/ ‐2 are manually operated. During the FY 2016 repair period, manually operated cross‐flooding connections were installed for FW‐4‐44‐1/‐2 and V‐4‐43‐1/‐2, replacing those for BLST‐4‐43‐1/‐2.

DAMAGE PATTERNS

Eleven damage patterns, defined below and shown on sheets 7 through 17, were examined. Damage patterns

4, 5, and 6 are first assumed without cross‐flooding, and damage patterns 4a, 5a, and 6a are after cross‐flooding of the port and starboard tank pair. Transverse extent of damage (B/5) is applied at a baseline draft of 14� 0".

Pattern Compartments Flooded Geometry File Part Remarks

1 Forepeak

Chain Locker

Main Deck Accommodation

BLST‐4‐0‐0

CHAINLKR

ACCOM‐MN‐DK Includes Bosun Stores

2 Deep Tank 4‐16‐1

Deep Tank 4‐08‐1

Bow Thruster Trunk

GSM Stores

Ships Storage

Chilled Stores

Freezer Stores

Main Deck Accommodation

FO‐4‐16‐1

BLST‐4‐08‐1

BT_TRUNK

GSMSTOR

SHIPSTORE

CHLDSTOR

FRZRST0R

ACCOM‐MN‐DK Includes Bosun Stores

3 Double Bottom Tank 4‐22‐0

Sonar Void

Laundry & Exercise

Scientific Stores

Main Deck Accommodation

BLST‐4‐22‐0

SNRVOID.C

LNDR‐EXR

SCISTOR

ACCOM‐MN‐DK.C Includes Bosun Stores

4 Deep Tank 4‐34‐1

Accom, Lower Deck, FR 34‐43

Main Deck Accommodation

FO‐4‐34‐1

ACCOM01

ACCOM‐MN‐DK

Transient Damaged Condition

Includes Bosun Stores

4a Deep Tank 4‐34‐1

Deep Tank 4‐34‐2

Accom, Lower Deck, FR 34‐43

Main Deck Accommodation

FO‐4‐34‐1

FO‐4‐34‐2

ACCOM01

ACCOM‐MN‐DK

Cross‐connected

Includes Bosun Stores

5 Potable Water 4‐44‐1

Void V‐43‐1

Anti‐Roll Tank, 3‐51‐0

Accom, Lower Deck, FR 43‐55

Main Deck Accommodation

FW‐4‐44‐1

V‐4‐43‐1

FW‐3‐51‐0

ACCOM02

ACCOM‐MN‐DK

Was Deep Tank BLST‐4‐43‐1

New cofferdam was in BLST‐4‐43‐1

Transient Damaged Condition

Includes Bosun Stores

5a Potable Water 4‐44‐1

Void 4‐43‐1

Potable Water 4‐44‐2

Void 4‐43‐2

Anti‐Roll Tank, 3‐51‐0

Accom, Lower Deck, FR 43‐55

Main Deck Accommodation

FW‐4‐44‐1

V‐4‐43‐1

FW‐4‐44‐2

V‐4‐43‐2

FW‐3‐51‐0

ACCOM02

ACCOM‐MN‐DK

Was Deep Tank BLST‐4‐43‐1

New cofferdam was in BLST‐4‐43‐1

Cross‐connected, was in BLST‐4‐43‐2

Cross‐connected, was in BLST‐4‐43‐2

Includes Bosun Stores

6 Double Bottom Tank 4‐55‐3

Engine Room

FO‐4‐55‐3

ENGROOM Transient Damaged Condition

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 6 of 24

Pattern Compartments Flooded Geometry File Part Remarks

6a Double Bottom Tank 4‐55‐3

Double Bottom Tank 4‐55‐4

Engine Room

FO‐4‐55‐3

FO‐4‐55‐4

ENGROOM

Cross‐connected

7 Deep Tank 4‐75‐3

Engineer Stores

Engineer Workshop

FO‐4‐75‐3

ENGRSTRS

WORKSHOP

8 Deep Tank 2‐87‐1

Void, FR 87‐95

FW‐2‐87‐1

AFTVOID‐S

CALCULATION OF MINIMUM GMT REQUIRED

The General HydroStatics (GHS) computer program from Creative Systems, Inc of Port Townsend, WA, was used to calculate minimum GMt required. The geometry file used, reference (e), represents the hull form described by references (b) and (c) and with internal compartments as shown by reference (d).

Jefferson.gf7 incorporates the modeling of internal tanks and other compartments in sufficient detail for analysis of damage from the starboard side, and this analysis examines only starboard side damage. This is acceptable because spaces breached by the prescribed transverse extent of damage are symmetric port and starboard. In some cases several spaces, which would all be flooded by the prescribed damage, are combined into one "part".

Minimum GMt required was calculated using the following process.

1. Using a run file, which includes definitions for each damage pattern, calculate the maximum allowed vertical center of gravity (KGv) which satisfies damage survival requirements of either reference (a) for final equilibrium or reference (g) for the transient condition for a range of intact displacements and trim. These requirements for final equilibrium conditions after cross flooding (if applicable) are:

a. the final angle of damaged equilibrium after equalization must not exceed 7 degrees,

b. the margin line may not be immersed at any point, and

c. the ship�s upright metacentric height must be at least 2 inches (0.167 feet).

The requirements for the transient damage condition before cross flooding are:

a. the righting arm at equilibrium must be at least 0.16 feet

b. there must be at least 7 degrees between the equilibrium angle and the angle where the righting arm becomes zero

The run file is shown in the Appendix.

2. For each combination of intact displacement and trim considered, calculate the associated hydrostatic properties LCF draft and transverse metacenter (KMt). Calculated hydrostatic properties are shown on sheet 18.

3. For each damage pattern and combination of intact displacement and trim, the minimum GMt required is:

Minimum GMt required = KMt � KGv

For a given intact displacement and trim each damage pattern results in a different maximum allowed KGv, and thus GMt required. The largest GMt value from all damage patterns is the governing minimum GMt required.

Computed values and graphs of GMt are shown on sheets 22 through 28.

LOADING CONDITIONS

The load line displacement was analyzed with the eleven damage patterns defined above. Damage patterns 4, 5, and 6 are the transient damaged conditions, prior to cross flooding, and damage patterns 4a, 5a, and 6a are after the cross‐flooding of the port and starboard tank pair.

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 7 of 24

DAMAGE PATTERN 1

BLST‐4‐0‐0

CHAINLKR

ACCOM‐MN‐DK

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 8 of 24

DAMAGE PATTERN 2

ACCOM‐MN‐DK

BLST‐4‐8‐1

FO‐4‐16‐1

GSMSTOR

SHIPSTORE

CHLDSTOR

FRZRSTOR

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 9 of 24

DAMAGE PATTERN 3

ACCOM‐MN‐DK

SNRVOID

BLST‐4‐22‐1

LNDR‐EXR

SCISTOR

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 10 of 24

DAMAGE PATTERN 4

ACCOM‐MN‐DK

ACCOM01

FO‐4‐34‐1

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 11 of 24

DAMAGE PATTERN 4a

ACCOM‐MN‐DK

ACCOM01

FO‐4‐34‐1

FO‐4‐34‐2

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 12 of 24

DAMAGE PATTERN 5

ACCOM‐MN‐DK

ACCOM02

BLST‐3‐51‐0

FW‐3‐44‐1

V‐4‐43‐1

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 13 of 24

DAMAGE PATTERN 5a

ACCOM‐MN‐DK

ACCOM02

BLST‐3‐51‐0

FW‐3‐44‐1

FW‐3‐44‐2

V‐4‐43‐1

V‐4‐43‐2

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 14 of 24

DAMAGE PATTERN 6

ENGROOM

FO‐4‐55‐1

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 15 of 24

DAMAGE PATTERN 6a

ENGROOM

FO‐4‐55‐1

FO‐4‐55‐2

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 16 of 24

DAMAGE PATTERN 7

ENGRSTRS

WORKSHOP

FO‐4‐75‐3

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 17 of 24

DAMAGE PATTERN 8

FW‐2‐87‐1

AFTVOID‐S

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 18 of 24

MINIMUM GMT REQUIRED

Values marked under damage patterns 4, 5, and 6 are calculated by the final flooding criteria of reference (a) if counterflooding cannot be done. Values marked under damage patterns 4t, 5t, and 6t are calculated by the transient flooding criteria of reference (g) prior to counterflooding.

INTACT LCF KMt GMt Required (feet)

Draft Damage Pattern

LT SW feet feet 1 2 3 4t 4a 5t 5a 6t 6a 7 8 Overall

1185 9.00 25.37 0.21 3.25 3.17 2.36 2.32 2.69 2.58 2.18 1.33 1.13 0.16 3.25

1228 9.25 24.99 0.20 3.27 3.04 2.17 2.20 2.46 2.43 1.96 1.21 1.21 0.16 3.27

1271 9.50 24.66 0.21 3.29 2.91 2.01 2.13 2.29 2.33 1.81 1.15 1.33 0.16 3.29

1314 9.75 24.34 0.20 3.29 2.78 1.84 2.02 2.08 2.19 1.64 1.09 1.42 0.17 3.29

1358 10.00 24.06 0.21 3.31 2.65 1.70 1.95 1.94 2.10 1.54 1.04 1.54 0.16 3.31

1403 10.25 23.79 0.20 3.31 2.53 1.56 1.86 1.80 1.98 1.42 0.98 1.64 0.17 3.31

1447 10.50 23.55 0.20 3.32 2.43 1.45 1.79 1.69 1.89 1.35 0.93 1.74 0.16 3.32

1492 10.75 23.32 0.19 3.31 2.30 1.36 1.70 1.60 1.78 1.29 0.87 1.83 0.16 3.31

1538 11.00 23.12 0.20 3.31 2.18 1.29 1.65 1.53 1.69 1.32 0.84 1.92 0.16 3.31

1584 11.25 22.93 0.19 3.28 2.08 1.23 1.57 1.48 1.60 1.30 0.81 2.04 0.16 3.28

1630 11.50 22.77 0.20 3.27 1.98 1.20 1.52 1.47 1.52 1.31 0.82 2.08 0.17 3.27

1677 11.75 22.61 0.20 3.23 1.89 1.18 1.45 1.45 1.43 1.35 0.82 2.17 0.17 3.23

1724 12.00 22.47 0.20 3.20 1.79 1.17 1.40 1.47 1.35 1.37 0.83 2.20 0.17 3.20

1771 12.25 22.35 0.21 3.18 1.73 1.19 1.35 1.50 1.28 1.41 0.84 2.29 0.18 3.18

1819 12.50 22.23 0.19 3.15 1.63 1.22 1.28 1.54 1.19 1.40 0.84 2.31 0.20 3.15

1868 12.75 22.13 0.20 3.12 1.57 1.26 1.12 1.61 1.20 1.41 0.85 2.40 0.21 3.12

1917 13.00 22.05 0.21 3.10 1.50 1.33 1.28 1.69 1.16 1.50 0.86 2.47 0.24 3.10

1966 13.25 21.97 0.20 3.06 1.43 1.40 1.23 1.78 1.12 1.59 0.87 2.58 0.27 3.06

2016 13.50 21.90 0.20 3.01 1.38 1.49 1.20 1.88 1.09 1.70 0.87 2.66 0.30 3.01

2066 13.75 21.84 0.20 2.96 1.33 1.59 1.17 1.98 1.08 1.82 0.88 2.79 0.34 2.96

2117 14.00 21.79 0.20 2.90 1.28 1.70 1.14 2.10 1.08 1.96 0.89 2.87 0.39 2.90

1185 9.02 25.91 0.20 2.74 3.30 2.41 2.38 2.81 2.60 2.47 1.43 1.77 0.16 3.30

1228 9.27 25.52 0.19 2.75 3.15 2.22 2.27 2.59 2.45 2.28 1.37 1.87 0.16 3.15

1271 9.52 25.17 0.19 2.78 3.01 2.07 2.18 2.39 2.33 2.14 1.31 1.98 0.16 3.01

1314 9.77 24.85 0.20 2.80 2.89 1.91 2.08 2.21 2.21 2.02 1.25 2.07 0.17 2.89

1358 10.03 24.55 0.19 2.82 2.76 1.75 2.00 2.06 2.10 1.93 1.18 2.20 0.16 2.82

1403 10.28 24.28 0.20 2.84 2.67 1.62 1.92 1.93 1.99 1.86 1.14 2.24 0.16 2.84

1447 10.53 24.03 0.19 2.85 2.55 1.51 1.85 1.82 1.88 1.82 1.14 2.34 0.16 2.85

1492 10.78 23.81 0.20 2.88 2.46 1.43 1.78 1.75 1.79 1.81 1.14 2.37 0.17 2.88

1538 11.03 23.60 0.20 2.90 2.34 1.37 1.71 1.69 1.70 1.81 1.14 2.45 0.18 2.90

1584 11.28 23.41 0.19 2.91 2.23 1.32 1.64 1.65 1.61 1.83 1.14 2.47 0.19 2.91

1630 11.53 23.25 0.21 2.94 2.17 1.30 1.59 1.65 1.53 1.87 1.16 2.56 0.22 2.94

1677 11.78 23.09 0.20 2.95 2.06 1.29 1.52 1.65 1.45 1.91 1.15 2.60 0.25 2.95

1724 12.03 22.95 0.20 2.96 1.98 1.30 1.47 1.67 1.38 1.97 1.15 2.71 0.28 2.96

1771 12.28 22.83 0.21 2.96 1.90 1.33 1.41 1.72 1.33 2.04 1.16 2.79 0.32 2.96

1819 12.53 22.72 0.21 2.96 1.82 1.37 1.36 1.79 1.30 2.13 1.17 2.93 0.35 2.96

1868 12.77 22.61 0.20 2.94 1.75 1.42 1.31 1.86 1.31 2.21 1.16 3.01 0.41 3.01

1917 13.02 22.51 0.20 2.92 1.67 1.48 1.26 1.94 1.35 2.31 1.16 3.17 0.49 3.17

1966 13.27 22.41 0.19 2.89 1.61 1.55 1.27 2.04 1.34 2.40 1.14 3.24 0.54 3.24

2016 13.52 22.31 0.18 2.86 1.51 1.62 1.25 2.12 1.32 2.51 1.11 3.30 0.59 3.30

2066 13.77 22.21 0.17 2.83 1.44 1.70 1.22 2.21 1.31 2.61 1.07 3.39 0.66 3.39

2117 14.01 22.09 0.15 2.78 1.34 1.76 1.18 2.27 1.27 2.70 1.00 3.39 0.70 3.39

T ri m b y

S te rn o v e r

LB

P

Displacement

Z e ro

T m

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 19 of 24

4t

4a

5t

5a

6t

6a

M in im u

R q u ir e d

Tr a n sv e rs e

M e ta ce n tr ic

H ig h t G M t (f e e t)

Initial Draft at LCF (feet above baseline)

Zero Trim

D a m a g e

P a tt e rn

4t

4a

5t

5a

6t

6a

M in im u

R q u ir e d

Tr a n sv e rs e

M e ta ce n tr ic

H ig h t G M t (f e e t)

Draft at LCF (feet above baseline)

3' Aft Trim

D a m a g e

P a tt e rn

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 20 of 24

MAXIMUM ALLOWED KG (FEET, VIRTUAL)

Maximum Allowed KG (feet, virtual)

Damage Pattern

LT SW 1 2 3 4 4t 4a 5 5t 5a 6 6t 6a 7 8 Overall

1185 25.16 22.12 22.20 18.35 23.01 23.05 17.04 22.68 22.79 17.36 23.19 24.04 24.24 25.21 22.12

1228 24.79 21.72 21.95 18.13 22.82 22.79 16.82 22.53 22.56 17.36 23.03 23.78 23.78 24.83 21.72

1271 24.45 21.37 21.75 17.86 22.65 22.53 16.63 22.37 22.33 17.38 22.85 23.51 23.33 24.50 21.37

1314 24.14 21.05 21.56 17.62 22.50 22.32 16.46 22.26 22.15 17.40 22.70 23.25 22.92 24.17 21.05

1358 23.85 20.75 21.41 17.39 22.36 22.11 16.30 22.12 21.96 17.41 22.52 23.02 22.52 23.90 20.75

1403 23.59 20.48 21.26 17.19 22.23 21.93 16.17 21.99 21.81 17.42 22.37 22.81 22.15 23.62 20.48

1447 23.35 20.23 21.12 17.01 22.10 21.76 16.05 21.86 21.66 17.43 22.20 22.62 21.81 23.39 20.23

1492 23.13 20.01 21.02 16.84 21.96 21.62 15.95 21.72 21.54 17.37 22.03 22.45 21.49 23.16 20.01

1538 22.92 19.81 20.94 16.70 21.83 21.47 15.86 21.59 21.43 17.37 21.80 22.28 21.20 22.96 19.81

1584 22.74 19.65 20.85 16.57 21.70 21.36 15.78 21.45 21.33 17.37 21.63 22.12 20.89 22.77 19.65

1630 22.57 19.50 20.79 16.45 21.57 21.25 15.72 21.30 21.25 17.37 21.46 21.95 20.69 22.60 19.50

1677 22.41 19.38 20.72 16.35 21.43 21.16 15.66 21.16 21.18 17.38 21.26 21.79 20.44 22.44 19.38

1724 22.27 19.27 20.68 16.25 21.30 21.07 15.62 21.00 21.12 17.38 21.10 21.64 20.27 22.30 19.27

1771 22.14 19.17 20.62 16.17 21.16 21.00 15.59 20.85 21.07 17.33 20.94 21.51 20.06 22.17 19.17

1819 22.04 19.08 20.60 16.10 21.01 20.95 15.55 20.69 21.04 17.35 20.83 21.39 19.92 22.03 19.08

1868 21.93 19.01 20.56 16.04 20.87 21.01 15.51 20.52 20.93 17.36 20.72 21.28 19.73 21.92 19.01

1917 21.84 18.95 20.55 15.97 20.72 20.77 15.48 20.36 20.89 17.38 20.55 21.19 19.58 21.81 18.95

1966 21.77 18.91 20.54 15.91 20.57 20.74 15.44 20.19 20.85 17.41 20.38 21.10 19.39 21.70 18.91

2016 21.70 18.89 20.52 15.86 20.41 20.70 15.41 20.02 20.81 17.43 20.20 21.03 19.24 21.60 18.89

2066 21.64 18.88 20.51 15.81 20.25 20.67 15.38 19.86 20.76 17.46 20.02 20.96 19.05 21.50 18.88

2117 21.59 18.89 20.51 15.76 20.09 20.65 15.36 19.69 20.71 17.44 19.83 20.90 18.92 21.40 18.89

1185 25.71 23.17 22.61 19.14 23.50 23.53 17.67 23.10 23.31 17.99 23.44 24.48 24.14 25.75 22.61

1228 25.33 22.77 22.37 18.83 23.30 23.25 17.44 22.93 23.07 17.96 23.24 24.15 23.65 25.36 22.37

1271 24.98 22.39 22.16 18.55 23.10 22.99 17.24 22.78 22.84 17.92 23.03 23.86 23.19 25.01 22.16

1314 24.65 22.05 21.96 18.29 22.94 22.77 17.06 22.64 22.64 17.88 22.83 23.60 22.78 24.68 21.96

1358 24.36 21.73 21.79 18.06 22.80 22.55 16.91 22.49 22.45 17.84 22.62 23.37 22.35 24.39 21.73

1403 24.08 21.44 21.61 17.85 22.66 22.36 16.77 22.35 22.29 17.80 22.42 23.14 22.04 24.12 21.44

1447 23.84 21.18 21.48 17.66 22.52 22.18 16.64 22.21 22.15 17.77 22.21 22.89 21.69 23.87 21.18

1492 23.61 20.93 21.35 17.49 22.38 22.03 16.54 22.06 22.02 17.67 22.00 22.67 21.44 23.64 20.93

1538 23.40 20.70 21.26 17.33 22.23 21.89 16.45 21.91 21.90 17.64 21.79 22.46 21.15 23.42 20.70

1584 23.22 20.50 21.18 17.20 22.09 21.77 16.37 21.76 21.80 17.62 21.58 22.27 20.94 23.22 20.50

1630 23.04 20.31 21.08 17.08 21.95 21.66 16.29 21.60 21.72 17.60 21.38 22.09 20.69 23.03 20.31

1677 22.89 20.14 21.03 16.98 21.80 21.57 16.22 21.44 21.64 17.59 21.18 21.94 20.49 22.84 20.14

1724 22.75 19.99 20.97 16.88 21.65 21.48 16.16 21.28 21.57 17.59 20.98 21.80 20.24 22.67 19.99

1771 22.62 19.87 20.93 16.79 21.50 21.42 16.10 21.11 21.50 17.53 20.79 21.67 20.04 22.51 19.87

1819 22.51 19.76 20.90 16.71 21.35 21.36 16.03 20.93 21.42 17.53 20.59 21.55 19.79 22.37 19.76

1868 22.41 19.67 20.86 16.63 21.19 21.30 15.97 20.75 21.30 17.53 20.40 21.45 19.60 22.20 19.60

1917 22.31 19.59 20.84 16.55 21.03 21.25 15.90 20.57 21.16 17.55 20.20 21.35 19.34 22.02 19.34

1966 22.22 19.52 20.80 16.47 20.86 21.14 15.83 20.37 21.07 17.57 20.01 21.27 19.17 21.87 19.17

2016 22.13 19.45 20.80 16.39 20.69 21.06 15.76 20.19 20.99 17.17 19.80 21.20 19.01 21.72 19.01

2066 22.04 19.38 20.77 16.30 20.51 20.99 15.70 20.00 20.90 16.47 19.60 21.14 18.82 21.55 18.82

2117 21.94 19.31 20.75 16.22 20.33 20.91 15.64 19.82 20.82 15.23 19.39 21.09 18.70 21.39 18.70

T b y

S te rn o v e r

LB

P

Displacement

Z ro

T m

S ee

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 21 of 24

APPENDIX: RUN FILE

`Filename : Damage7.rf

`Input file : Jefferson.gf7

`Output file : Damage.pf

`Date Author Action

`2006 May 29 Eric Snyder Created

`2009 Apr 6 Dan Mannheim Modified to incorporate MTN 02-95

`2016 Aug 1 Geoff Wilkie NOAA tank mods

`Computes maximum allowed virtual vertical center of gravity (KGmax) to

`satisfy damage stability standards of 46 CFR 171.080(e) "Damage survival

`for all existing vessels except those vessels authorized to carry more

`than 12 passengers on an international voyage requiring a SOLAS

`Passenger Ship Safety Certificate" and MTN 02-95 "Damage stability equalization

`for vessels (mono hull only) subject to 46 CFR 171.080(d)" for the eleven

`subdivision compartments ; 8 as originally design plus 3 with cross-flooding.

CLEAR

`--- Declare user VARIABLES & SET initial values --------------------- VARIABLES(REAL) MyLBP | SET MyLBP = 190.

VARIABLES(STRING) MyDispls

SET MyDispls = "1184.9 1227.69 1270.84 1314.37 1358.26 1402.53 1447.22,

1492.28 1537.75 1583.61 1629.9 1676.6 1723.74 1771.32,

1819.36 1867.87 1916.86 1966.27 2016.1 2066.32 2116.88"

`{MyDispls} represents zero trim LCF draft range from 9' to 14' with

`a 3" increment.

VARIABLES(STRING) MyTrims

SET MyTrims " 0.0 3a/{MyLBP}"

`"1.0f/{MyLBP} 0.5f/{MyLBP} 0.0/{MyLBP} 0.5a/{MyLBP},1.0a/{MyLBP} 1.5a/{MyLBP}

2.0a/{MyLBP}"

`--- Load geometry file via READ stmt so available for PERM & LIMIT cmds

READ Jefferson.gf7

LBP {MyLBP}

Disk Damage7

GHS Draft = 9 9.25 ... 14 /KM `calculate KM and LCF drafts for all conditions

Trim = 3a/{MyLBP}

GHS Displ = {MyDispls}

`Trim = 1f/{MyLBP}

`GHS Displ = {MyDispls}

`Trim = 0.5f/{MyLBP}

`GHS Displ = {MyDispls}

`Trim = 0.5a/{MyLBP}

`GHS Displ = {MyDispls}

`Trim = 1a/{MyLBP}

`GHS Displ = {MyDispls}

`Trim = 1.5a/{MyLBP}

`GHS Displ = {MyDispls}

`Trim = 2a/{MyLBP}

`GHS Displ = {MyDispls}

`--- Set compt permeabilities in accordance with 46 CFR Table 171.080(c)

` Non-tank compartment permeabilities in the geometry file are set in

` accordance with 46 CFR Table 171.080(c)

PERM(FO-*, BLST-*, FW-*, V-*) 0.95

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 22 of 24

`Set LIMIT statements for 46 CFR 171.080(e) damage stability standard

MACRO CFR171

LIMITS OFF

LIMIT TITLE 46 CFR 171.080(e) (1) (3) (4)

LIMIT(1) ABSOLUTE ANGLE AT EQUIL < 7.

LIMIT(3) ANGLE FROM EQUIL TO DI > 0.

LIMIT(4) GM UPRIGHT > 0.1654

`Set LIMIT statements for MTN 02-95 transient condition damage stability std

MACRO MTN0295

LIMITS OFF

LIMIT TITLE MTN 02-95 TRANSIENT CONDITION LIMITS

` LIMIT(1) ANGLE FROM EQUIL TO FLD > 0. degrees (no downflood pts within 40° )

LIMIT(2) GM AT EQUIL > 0.16

LIMIT(3) ANGLE FROM EQUIL TO RA0 > 7.

` Limit(4) Absolute Angle at Equil < 30. add this to see what equilibrium angle is

MACRO Patt01

TYPE(BLST-4-0-0) FLOODED

TYPE(CHAINLKR) FLOODED

TYPE(ACCOM-MN-DK) FLOODED

MACRO Patt02

TYPE(FO-4-16-1) FLOODED

TYPE(BLST-4-8-1) FLOODED

TYPE(GSMSTOR) FLOODED

TYPE(SHIPSTORE) FLOODED

TYPE(CHLDSTOR) FLOODED

TYPE(FRZRSTOR) FLOODED

MACRO Patt03

TYPE(BLST-4-22-1) FLOODED

TYPE(SNRVOID) FLOODED

TYPE(LNDR-EXR) FLOODED

TYPE(SCISTOR) FLOODED

MACRO Patt04

TYPE(FO-4-34-1) FLOODED

TYPE(ACCOM01) FLOODED

MACRO Patt04a

TYPE(FO-4-34-1) FLOODED

TYPE(FO-4-34-2) FLOODED

TYPE(ACCOM01) FLOODED

MACRO Patt05

TYPE(FW-3-44-1) FLOODED

TYPE(V-4-43-1) FLOODED

TYPE(BLST-3-51-0) FLOODED

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 23 of 24

TYPE(ACCOM02) FLOODED

MACRO Patt05a

TYPE(FW-3-44-1) FLOODED

TYPE(FW-3-44-2) FLOODED

TYPE(V-4-43-1) FLOODED

TYPE(V-4-43-2) FLOODED

TYPE(BLST-3-51-0) FLOODED

TYPE(ACCOM02) FLOODED

MACRO Patt06

TYPE(FO-4-55-1) FLOODED

TYPE(ENGROOM) FLOODED

MACRO Patt06a

TYPE(FO-4-55-1) FLOODED

TYPE(FO-4-55-2) FLOODED

TYPE(ENGROOM) FLOODED

MACRO Patt07

TYPE(FO-4-75-3) FLOODED

TYPE(ENGRSTRS) FLOODED

TYPE(WORKSHOP) FLOODED

MACRO Patt08

TYPE(FW-2-87-1) FLOODED

TYPE(AFTVOID-S) FLOODED

MACRO Doit

SUBTITLE `Identify damage case on output

\%3

TYPE(*) INTACT `Undamage all compartments

MaxVCG Off

LOAD(*) 0.000 `Ensure all tanks are empty

TRIM = 0.000 `Force zero trim

HEEL = 0.000 `Force zero heel

VCG = 0.000 `Set lower limit of MAXVCG

DRAFT 13.000 `Set starting equilibrium condition

SOLVE WEIGHT LCG TCG

VARY TRIM

Page

.%2 `Set limits based on condition

.%1 `Set damage case by flooding affected compt

SOLVE Draft Trim Heel

STATUS

MAXVCG DISPL = {MyDispls} /TRIM:{MyTrims} /NoTol

`Find KGmax satisfying damage stability standard

`=== Main routine ===================================================

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2

DAMAGE STABILITY ANALYSIS TJ‐079‐02 C 9/6/16 24 of 24

` Damage Limit

` Patt Case Description

.Doit Patt01 CFR171 "Damage Pattern 01, Stem to Fr 8"

.Doit Patt02 CFR171 "Damage Pattern 02, Fr 8 to Fr 22"

.Doit Patt03 CFR171 "Damage Pattern 03, Fr 22 to Fr 34"

.Doit Patt04 CFR171 "Damage Pattern 04, Fr 34 to Fr 43 uncorrected"

.Doit Patt04 MTN0295 "Damage Pattern 04t, Fr 34 to Fr 43, transient condition"

.Doit Patt04a CFR171 "Damage Pattern 04a, Fr 34 to Fr 43 with cross-flooding"

.Doit Patt05 CFR171 "Damage Pattern 05, Fr 43 to Fr 55 uncorrected"

.Doit Patt05 MTN0295 "Damage Pattern 05t, Fr 43 to Fr 55, transient condition"

.Doit Patt05a CFR171 "Damage Pattern 05a, Fr 43 to Fr 55 with cross-flooding"

.Doit Patt06 CFR171 "Damage Pattern 06, Fr 55 to Fr 75 uncorrected"

.Doit Patt06 MTN0295 "Damage Pattern 06t, Fr 55 to Fr 75, transient condition"

.Doit Patt06a CFR171 "Damage Pattern 06a, Fr 55 to Fr 75 with cross-flooding"

.Doit Patt07 CFR171 "Damage Pattern 07, Fr 75 to Fr 87"

.Doit Patt08 CFR171 "Damage Pattern 08, Fr 87 to Transom"

Disk Off

Type(*) Intact

Solve Draft Trim Heel

Status

A B S H ou st on L et te r R ef T

D at ed

5- O

C T -2