M286-097-C023 Rev B

842 KB Posted Feb 10, 2016

Attached to: FERDINAND HASSLER Drydock FY16 Federal contract opportunity
Solicitation number: EA-133M-16-RP-0040
Issued by: Department of Commerce National Oceanic and Atmospheric Administration

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NOAA Ship FERDINAND R. HASSLER TRIM AND STABILITY Dwg: M286-097-C023 Rev: B BOOKLET Sheet

Art Anderson Associates, 202 Pacific Avenue, Bremerton, WA 98337-1932

CONTENTS

REFERENCES

GENERAL NOTES

TABLE OF EQUIVALENTS

VESSEL CHARACTERISTICS

INSTRUCTIONS FOR DETERMINING STABILITY, TRIM, AND HEEL

Long Method

Displacement, Center of Gravity, and Free Surface Moment .. 6 Trim Stability Heel

Short Method Stability Trim

DETERMINING DISPLACEMENT AND TRIM FROM OBSERVED DRAFTS

ROUTINE OPERATING INSTRUCTIONS

LIFTING DEVICES

TANK USE AND BALLAST SEQUENCE

ACTION FOLLOWING DAMAGE

DRAFT DIAGRAM

TRIM DIAGRAM

TRIM CHANGE DUE TO BALLASTING

GM CHANGE DUE TO BALLASTING

GM CHANGE DUE TO ADDING WEIGHT

HYDROSTATIC PROPERTIES (zero trim, zero heel, VCG = 0.00)

GM REQUIRED AND GM AVAILABLE CURVE

TANK CAPACITY TABLE

INBOARD PROFILE

MAIN DECK PLAN

EFFECT OF ICING ON GM AVAILABLE

GM REQUIRED AND GM AVAILABLE CURVE, INCLUDING ICING

STANDARD LOADING CONDITIONS

I - Light Ship E - Extreme Load, Departure (incl. Service Life Allowance).. 26 C1 – Full Load Departure C2 – Mid Voyage C3 – Arrival

BLANK CALCULATION FORM

REFERENCES

1. F.R. HASSLER – 079 Intact & Damage Stability Analysis, Revision (-), Dated 20 June 2013

2. Tidewater Naval Architects Report 3002-63-T03 Revision A, Stability Test Data Report

3. USCG Marine Safety Center, Letter Serial H2-1302412, Lightship Characteristics

4. FC24 NOAA SWATH Coastal mapping Vessel Sounding Tables

GENERAL NOTES

1. This Trim and Stability Booklet incorporates data from the intact and damage stability calculations, Reference 1. Lightship characteristics are the results of a stability test including lightweight survey and inclining experiment of the NOAA Ship FERDINAND R. HASSLER conducted on 21 May 2013 at Colonna Shipyard in Norfolk, VA, Reference 2, and as assigned and approved by USCG Marine Safety Center, Washington, DC in Reference 3.

2. The Lightship characteristics of the vessel have not been altered for any changes at this time, however, any subsequent changes are to be documented below and revised in the spreadsheet and loading conditions. Upon achieving a net change of 2% of approved lightship weight, the vessel shall be re-inclined.

Item Weight LCG TCG VCG L-Mmnt T-Mmnt V-Mmnt

[MT] [m] [m] [m] [MT-m] [MT-m] [MT-m]

Approved Lightship 666.64 16.340 -0.180 5.800 10892.900 -121.00 3866.50

0.00 00.000 0.000 00.000 0.000 0.000 0.000

Revised Lightship - - - - - - -

2. This booklet has been prepared to enable operating personnel to determine the ship's operating metacentric height (GM Available) and drafts for any condition of loading or operation. The instructions contained herein are intended to aid personnel in using this booklet and to provide the necessary operating information for maintaining satisfactory stability, trim, and list.

3. The vessel is not to be operated with trim exceeding 0.3 meters forward or 1.0 m aft as stated in the damage stability calculations, Reference 1.

4. The loading conditions shown in this booklet are representative of this vessel in its intended service, as a coastal mapping vessel. The minimum required values of GMt are, in all cases, to satisfy the requirements shown on the graph on sheet 18.

5. The original design of the Ferdinand R. Hassler included a Service Life Allowance (SLA) to account for future weight growth of 7.46 MT located at 7.01 m ABL, 24.70 m aft of the FP, and on centerline. However, ship alterations including the addition of the buoyancy appendages have changed the overall baseline.

1. Operating Margin – Based on the current loads in the Full Load Departure Condition and the Lightship mass properties as noted above, the vessel has an operating margin of 13 tonnes based on a Design Draft of 3.8m.

2. SLA –

a. Weight – The vessel has a Limiting Displacement corresponding to a draft of 3.95 m, based on the structural design. There is a total of 32.43 tonne margin between the current Full Load Departure condition and the Limiting Displacement.

b. Moment – Sheet 18 provides the chart of limiting GM’s for displacement that limit the total allowable metacentric height for a given loading condition.

6. Fuel Oil storage tanks 5-12-1 and 5-12-2 have physical capacities of 39,238 liters. Weight control measures restricted their full load capacity to 33,494 liters for 5-12-1 and 22,414 liters for 5-12-2. With the additional SLA of the buoyancy appendages, these tanks may be loaded to suit the mission in combinations with other loads, e.g. for an extended range voyage, provided that the weight and stability limits described herein are not exceeded.

7. Lube Oil storage tank 4- 4-3 has a physical capacity of 3,063 liters. Weight control measures restricted its full load capacity to 680 liters. Similar to the Fuel Oil storage tanks, the load may be varied to suit mission requirements provided that stability criteria are not exceeded.

8. All weights are in metric tons of 1000 kilograms. All moments are in metric ton-meters.

9. Reference planes for centers of gravity:

Center Units Reference Vertical meters Baseline, measured positive upward Longitudinal meters Frame 0, measured positive aft Transverse meters Centerline, port (-) or starboard (+)

The baseline is the horizontal line from which vertical distances are measured. It is located at the intersection of the inside surface of the bottom plating with the centerline of the pontoons.

10. All drafts are referenced to the baseline, except as otherwise noted.

11. All trims are trim on perpendiculars (LBP = 37.06 meters), except as otherwise noted.

TABLE OF EQUIVALENTS

1 Metric Ton = 1000 Kilograms

Sea Water 1.025 kg/L Fresh Water 1.000 kg/L Diesel Oil 0.870 kg/L Lubricating Oil 0.924 kg/L Hydraulic Oil 0.924 kg/L Gasoline 0.738 kg/L

VESSEL CHARACTERISTICS

Length Overall (LOA) 37.45 m Length Between Perpendiculars (LBP) 37.06 m Beam, molded (B) 16.40 m Depth, molded, to Main Deck midship 7.01 m Depth, baseline to top of Main Deck plating midship 7.02 m Draft, Design Waterline 3.80 m Displacement at Design Waterline 774.00 MT

Lightship characteristics:

Displacement 666.64 tons Vertical center of gravity 5.80 m (above baseline) Longitudinal center of gravity 16.34 m (aft FR 0) Transverse center of gravity 0.18 m (port of CL)

Complement

Officers 2 Crew 12

TOTAL 14

Fuel Oil Capacity F.O. Storage (S) (5-12-1) 39240 liters* F.O. Storage (P) (5-12-2) 39240 liters* F.O. Day Tank (S) (4-12-1) 11887 liters F.O. Day Tank (P) (4-12-2) 11887 liters EDG Storage (01-30-2) 585 liters F.O. TOTAL 80267 liters

* NOTE: F.O. Storage tanks (5-12-1 & 5-12-2) physical capacity indicated, but shall only be loaded to within the stability limits defined herein.

Lube Oil Capacity L.O. Storage (4- 4-3) 3063 liters*

* NOTE: L.O. Storage tank (4- 4-3) has a physical capacity of 3063 liters but shall only be loaded to within the stability limits defined herein. 608 liters recommended.

Potable Water Capacity FW Storage (S) (2- 4-1) 5374 liters FW Storage (P) (2- 4-2) 5374 liters FW Total 10748 liters

INSTRUCTIONS FOR DETERMINING STABILITY, TRIM, AND HEEL

Long Method

Displacement, Center of Gravity, and Free Surface Moment:

Displacement, center of gravity, and free surface moment of a proposed loading condition is determined using the blank Loading Summary sheet as follows.

Detailed weights and centers of gravity must be identified for all deadweight on board including liquids in tanks, stores, mission load items, and deck cargo.

1. Liquids in tanks.

a. For each non-empty tank enter the tank's load fraction. Determine the load fraction as follows:

(1) Convert the current tank sounding in meters to tank volume in liters using the vessel’s Sounding Tables, Reference 4, by interpolation.

(2) Divide the current tank volume in liters by the 100% capacity in liters on the Tank Capacity Table on sheet 18 to determine the load fraction

For example, the load fraction for the STBD FO Day Tank (4-12-1) with a sounding of 1.51 meters is computed as follows:

Find current volume in liters from Reference 4: = 7488.81

Find 100% capacity volume in liters: = 11887

Find load fraction: 7488.81 / 11887 = 0.63

b. Using the tank's load fraction calculate the weight as follows:

(1) Multiply the load fraction by the 100% capacity in metric tons on the Tank Capacity Table on sheet 18 to obtain the tank's load in metric tons.

For example, the weight for the STBD FO Day Tank (4-12-1) at a load fraction of 0.63 (or 63% full) is computed as follows.

Find tank's load in liters: 0.63 * 9.82 = 6.19

c. Free surface moment.

(1) For all empty tanks enter 0 (zero) in the FS Mom column.

(2) For all tanks, except fresh water tanks, which are 100% full enter 0 (zero) in the FS Mom column. For fresh water tanks that are 100% full enter the Slack FS Mom value from the Tank Capacity Table on sheet 18.

(3) For all tanks that are slack (less than 95% full) enter the Slack FS Mom value from the Tank Capacity Table on sheet 18 in the FS Mom column.

The following tanks should be considered slack in all loading conditions.

FO Storage Tank 5-12-1 FO Storage Tank 5-12-2 FO Day Tank 4-12-1 FO Day Tank 4-12-2 LO Storage Tank 4- 4-3 Fresh Water Tank 2- 4-1 Fresh Water Tank 2- 4-2

(4)For all other tanks enter the Full FS Mom value from the Tank Capacity Table on sheet 18 in the FS Mom column.

d. Multiply the weight by the VCG, LCG, and TCG to obtain the vertical moment (VMOM), longitudinal moment (LMOM), and transverse moment (TMOM) for each tank.

e. For each liquid type (diesel oil, SW ballast, fresh water, lube oil, or misc) sum the weight, VMOM, LMOM, TMOM, and FS Mom. Divide the sum of VMOM, LMOM, and TMOM by the sum of the weight to obtain the total VCG, LCG, and TCG.

If the total FS mom for each liquid type is less than the minimum value listed below enter the minimum FS Mom value from the list below in place of the computed value.

Fuel Oil 56.32 Fresh Water 1.56 Hydraulic Oil 0.19 Lube Oil 0.08

2. Stores.

Enter the load for PROVISIONS & STORES.

Typical full load stores is 1.04 MT.

Multiply the weight by the VCG, LCG, and TCG to obtain the vertical moment (VMOM), longitudinal moment (LMOM), and transverse moment (TMOM).

3. Mission load items.

The available mission load for the NOAA Ship FERDINAND R. HASSLER is variable and a function of the available operating and service life margins. Mission loads brought aboard shall not exceed the stability limits as defined herein.

4. Ice Accretion.

If the vessel is experiencing topside icing during operations the weight of the ice must be accounted for in determining stability. Input the appropriate weight and center for the ice from the table on Sheet 22, for ice thicknesses other than shown the weight can be determined by interpolation and extrapolation.

5. Miscellaneous deadweight.

a. Enter miscellaneous deadweight load information not covered elsewhere on the Loading Summary sheet. These items could include additional scientific equipment, miscellaneous project gear, and the like. The information needed is: description, weight, vertical center of gravity (VCG), longitudinal center of gravity (LCG), and transverse center of gravity (TCG). If the miscellaneous deadweight load item contains a liquid loading the free surface moment (FS Mom) is also needed.

b. Calculate each load's vertical moment (VMOM), longitudinal moment (LMOM), and transverse moment (TMOM) by multiplying its weight by its VCG, LCG, and TCG respectively.

6. Sum all weights, vertical moments, longitudinal moments, transverse moments, and free surface moments for Crew & Effects, Spares & Repair Parts, Provisions & Stores, Total Tankage, Mission Loads, Ice Accretion, Miscellaneous Deadweight, and Light Ship on the Loading Summary sheet.

The sum of weights is the proposed loading condition's displacement

(DISPL).

The sums of moments are the proposed loading condition's total vertical moment (VMOM), total longitudinal moment (LMOM), total transverse moment (TMOM), and total free surface moment (FS Mom).

7. Divide the total vertical moment (VMOM) by the displacement (DISPL) to obtain the proposed loading condition's VCG. Divide the total longitudinal moment (LMOM) by the displacement (DISPL) to obtain the proposed loading condition's LCG. Divide the total transverse moment (TMOM) by the displacement (DISPL) to obtain the proposed loading condition's TCG.

Trim:

Trim and drafts of a proposed loading condition are determined using the blank Loading Summary sheet as follows (before trim and drafts can be determined the proposed loading condition's displacement (DISPL) and total longitudinal center of gravity (LCG) must be determined using the methods previously presented):

1. Using the proposed loading condition's displacement (DISPL) find the baseline mean draft (Tm), longitudinal center of buoyancy (LCB), longitudinal center of flotation (LCF), and longitudinal metacenter height above baseline (KML) from the table of Hydrostatic Properties on sheet 17.

Intermediate values can be determined by interpolation.

2. Calculate the trimming lever (TL) as:

TL = LCG - LCB

3. Calculate the moment to alter trim one cm (MT1) as:

MT1 = (KML - VCG) * DISPL / (100 * LBP) NOTE: LBP = 37.06 m

4. Calculate TRIM.

The moment causing the vessel to trim is the displacement (DISPL) multiplied by the trimming lever (TL. This trimming moment divided by 100 times the MT1 gives the total trim in meters. Trim will be forward (-) if LCG is forward of LCB and aft (+) if the opposite is true.

TRIM = (DISPL * TL) / (100* MT1)

5. Determine drafts.

Baseline drafts midships (Tx), at the forward draft marks (DMfwd), and at the aft draft marks (DMaft) are found as follows (all dimensions are in meters).

Tx = Tm + (TRIM * (17.88 - LCF) / LBP) Note: LBP = 37.06 m DMfwd = Tm + (TRIM * ( 1.30 – LCF) / LBP) DMaft = Tm + (TRIM * (29.70 - LCF) / LBP)

Stability:

Stability characteristics of a proposed loading condition are determined using the blank Loading Summary sheet as follows (before stability characteristics can be determined the proposed loading condition's Displacement (DISPL), total vertical center of gravity (VCG), and total free surface moment (FS Mom) must be determined using the methods presented above):

1. Using the proposed loading condition's displacement (DISPL) find the baseline mean draft (Tm) and the transverse metacenter height above baseline (KMt) from the table of Hydrostatic Properties on sheet 17.

Intermediate values can be determined by interpolation.

2. Calculate the uncorrected metacentric height (GM) as:

GM = KMt – VCG

4. Calculate the free surface correction (FS Corr) as:

FS Corr = -FS Mom / DISPL

5. Calculate the available metacentric height (GM Available) corrected for free surface as:

GM Available = GM + FS Corr

6. Using the baseline mean draft (Tm) find the minimum GM Required from the graph of GM Required Curves on sheet 18.

7. Compare the GM Available to the minimum GM Required by calculating the GM Margin as follows:

GM Margin = GM Available – GM Required

The GM Margin must be positive (greater than zero) at all times.

Heel:

Heel (list) of a proposed loading condition is determined, if desired, using the blank Loading Summary sheet as follows (before heel can be determined the proposed loading condition's displacement (DISPL), GM Available, and total transverse moment (TMOM) must be determined using the methods previously presented):

1. Calculate the heeling moment that would cause one degree of heel (MH1) as:

MH1 = 0.01745 * GM Available * DISPL

2. Calculate the angle of heel by dividing the total transverse moment (TMOM) by MH1. Port heel is indicated algebraically by (-), starboard by (+).

Short Method:

Stability:

For minor changes from any tabulated loading condition (sheets 24 through 32), the GM Available may be determined by applying GM corrections set forth in the tables on sheets 15 and 16. This method is fast and reasonably accurate in evaluating a loading condition that is similar to one of the representative conditions shown in this booklet.

Trim:

The effect on trim of minor changes from the representative loading conditions can be estimated from the trim diagram on sheet 13. This method is sufficiently accurate for practical purposes in predicting trim for a loading condition that is similar to one of the representative conditions shown in this booklet.

DETERMINING DISPLACEMENT AND TRIM FROM OBSERVED DRAFTS

The ship's displacement and trim can be determined from observed draft mark readings using the draft diagram on sheet 12. Instructions are provided on the diagram. The draft diagram must be used with the average of port and starboard draft readings to eliminate the effect of heel.

ROUTINE OPERATING INSTRUCTIONS

1. Reference 1, Intact and Damage Stability Analysis, shows that the vessel has sufficient stability in the range of operating drafts to function safely with the resulting loss in GM from free surface moment with all tanks slack.

However, as previously noted in the instructions, the vessel shall be loaded with a static trim not to exceed 0.3 meters by the bow and 1.0 meters by the stern.

2. Bilges and drain wells in machinery spaces shall be kept pumped to minimum content at all times.

3. Seawater ballast tanks are intended to be used to maintain the design draft of

3.8 m with even trim and heel throughout the voyage. As a result ballast tanks may be kept in a slack state as needed.

LIFTING DEVICES

The lifting devices installed aboard the vessel are as described in the following table. The intact stability analysis, Reference 1, shows that the vessel can be operated with up to one lifting device active at a time.

Equipment Qty Capacity/ Hook Load

[kg]

VCP

[m]

LCP

[m]

TCP

[m]

Ram Operated Devices Lift Point

A-FRAME 1 454.00 11.858 34.632 0.000

SURVEY BOAT DAVIT 1 6000.00 7.251 13.315 7.325

Revolving Boom Device Center of Swing

ARTICULATING KNUCKLE-BOOM

CRANE

11.0 m

RADIUS 1

5012* 11.775 31.200 -3.050

RESCUE BOAT DAVIT 3.90 m

RADIUS 1 1300.00 13.149 8.693 -7.400

VCP = vertical center of Location, Lift Point or Center of Swing. Measured from baseline (+ upward)

LCP = longitudinal center of Location, Lift Point or Center of Swing. Measured from Frame 0 (+ aft)

TCP = transverse center of Location, Lift Point, or Center of Swing. Measured from centerline (+ starboard)

* The knuckle boom crane has a lifting capacity on the hoist hook of 3628 kg and on the hook at the boom of 5012 kg.

TANK USE AND BALLASTING

The ship should be operated in such a manner as to maintain draft as close to the design draft of 3.8 m with even trim and heel as practical. In order to achieve this it is suggested that the Fuel Oil Day Tanks (4-12-1 and 4-12-2) be kept as close to 95% full as possible throughout the voyage. Fuel Oil Storage tanks (5-12- 1 and 5-12-2) may be burned unevenly to help alleviate excessive heel. Saltwater ballast should be taken aboard to negate the loss of displacement due to consuming fuel oil and other consumables. Saltwater ballast tanks may be filled unevenly to alleviate excessive trim and heel.

ACTION FOLLOWING DAMAGE

Most of the foregoing discussion applies to the intact properties of the vessel.

In the event of underwater damage or entry of water through the weather envelope, stability and trim will be affected by the consequent flooding of spaces within the vessel.

The response of the vessel to flooding will depend on the draft, intact trim, and stability characteristics existing immediately prior to the incident, and the condition of the tanks, if any, involved in the flooding. The routine operating instructions tabulated above are designed to reduce the trim and list resulting from such flooding and to reduce the amount of corrective action to be taken in the inevitable period of confusion following such an incident.

Entry of a significant amount of water into any part of the vessel should be regarded as an emergency situation and appropriate measures should be taken promptly. These would normally include the following:

1. Call for assistance.

2. Alert vessel personnel to the situation.

3. Favor stability in handling the vessel. Turn the vessel into the wind and seas if possible. Avoid hard turns.

4. Determine the source of flooding and the spaces affected or likely to be affected.

5. Activate the bilge system, emergency generator, and other emergency systems as required.

6. Establish flooding boundaries by shoring or patching, to prevent or limit progressive flooding.

In general, if trim and list reach a steady state with no further increases, chances of survival will be good. Further action will depend upon the degree of improvement in the vessel's attitude deemed necessary in the circumstances. For example, if the main deck aft is heavily awash, trimming by the head may be considered. If the vessel lists heavily as a result of asymmetrical flooding, list correction may be undertaken.

Trim and list correction should generally be made by shifting liquids already on board rather than by taking on water ballast, which will increase the draft and reduce the reserve buoyancy. When shifting liquids, the following precautions should be observed:

1. DO NOT attempt to correct a list by shifting liquids if any of the signs of negative GM are present. These signs include:

a. a slow, erratic period of roll;

b. failure to return to upright after rolling to one side; and

c. listing alternatively to port and starboard.

2. If, and only if, it can be positively determined that a list is due to unsymmetrical flooding and that the vessel has a positive GM, list correction by shifting of liquids may be undertaken slowly and cautiously.

3. Take suction from tanks which are already slack rather than tanks that are full. This will minimize the increase in free surface effect.

4. Discharge to tanks which are slack, rather than empty, and preferably those that are nearly full. Press up into vent lines.

5. Favor improvements of trim, if possible, when selecting tanks for transfer.

Minor improvements in stability may also be accomplished by lowering movable weights. For example, cranes, if initially up in the working position, may be lowered to the fully-down position. In cases where survival takes precedence over all other considerations, heavy gear may be jettisoned, working from the upper decks down. Jettisoning is a slow and laborious operation and the improvement obtained will usually be small, therefore, it should be considered only in an extreme situation.

The response of the vessel to loss of an individual, or several, of the fiberglass buoyancy appendages will depend on the draft, intact trim, and stability characteristics prior to their loss. The vessel is capable of maintaining adequate stability in the event that all appendages on one side become damaged or detached. The steps to follow in the event that a section of the buoyancy appendages becomes damaged or detached are:

1. Ensure that the hull’s integrity has not been further compromised, and that no flooding has occurred.

2. Alert vessel personnel to the situation.

3. In the event of flooding, follow the steps listed in the previous section of this report.

4. Determine the extent of damage incurred by the appendages; ensure that the vessel can get underway without further damaging the appendages or the hull.

5. Transferring ballast may be required to get the vessel back to an even-heel condition.

In general, the survivability of the vessel will not be severely imperiled by the loss of one or several of the appendages.

TRIM CHANGE DUE TO BALLASTING

The effect on trim of filling seawater ballast tanks can be estimated from the following table. For emptying seawater ballast tanks the trim change will be the same as for filling, but with the sign reversed.

Displ & LCF Before Filling Tk

670 MT 750 MT 770 MT

TONS 15.228 m 16.158 m 16.427 m

Liq TANK COMPT ADDED TRIM CHANGE [degrees]

SW SW Ballast 1 (S) 5- 3-1 34.49 -4.41 -4.03 -3.88 SW SW Ballast 1 (P) 5- 3-2 34.49 -4.39 -4.02 -3.87 SW SW Ballast 2 (S) 5-20-1 81.86 -0.59 -0.82 -0.85 SW SW Ballast 2 (P) 5-20-2 81.86 -0.60 -0.84 -0.86 SW SW Ballast 3 (S) 4-40-1 13.46 +1.38 +1.01 +0.91 SW SW Ballast 3 (P) 4-40-2 13.46 +1.38 +1.00 +0.91 Trim aft is positive (+); trim forward is negative (-) Seawater tanks are filled to 100% capacity

GM CHANGE DUE TO BALLASTING

The effect on GM due to filling ballast tanks can be estimated from the following table. This table is a guide to aid in selecting tanks to be filled and is not intended as a substitute for detailed loading calculations. For emptying tanks, the change in GM will be the same as for filling tanks, but with the sign reversed.

Displ & VCG Before Filling Tk

670 MT 750 MT 770 MT

MT 5.8 m 5.5 m 5.5 m

Liq TANK COMPT ADDED GM CHANGE (m)

SW SW Ballast 1 (S) 5- 3-1 34.49 +0.10 +0.00 -0.02 SW SW Ballast 1 (P) 5- 3-2 34.49 +0.11 +0.03 +0.02 SW SW Ballast 2 (S) 5-20-1 81.86 +0.41 +1.14 +1.04 SW SW Ballast 2 (P) 5-20-2 81.86 +0.46 +1.18 +1.08 SW SW Ballast 3 (S) 4-40-1 13.46 +0.11 +0.29 +0.28 SW SW Ballast 3 (P) 4-40-2 13.46 +0.10 +0.31 +0.30 Seawater tanks are filled to 100% capacity Includes GM loss due to free surface during tank filling

GM CHANGE DUE TO ADDING WEIGHT

For estimating the effect on stability of weight changes at various levels, as from additional spare gear, deck cargo, and the like, the following table shows the change in GM resulting from an additional ten (10) metric tons. For weights other than ten (10) metric tons, the change in GM will be proportional. For weights removed at corresponding levels, the change in GM will be the same as for weight added, but with the sign reversed.

VERTICAL Displ & VCG Before Filling Tk

VERTICAL HEIGHT OF 670 MT 750 MT 770 MT

LOCATION ADDED 5.8 m 5.5 m 5.5 m

WEIGHT [m] GM CHANGE (meters)

02 Level 13.21 -0.468 -0.24 -0.20 01 Level 10.61 -0.427 -0.20 -0.17 Main Deck 8.01 -0.387 -0.17 -0.11 3rd Deck 5.70 -0.358 -0.14 -0.11 4th Deck 3.60 -0.325 -0.11 -0.08

HYDROSTATIC PROPERTIES

(zero trim, zero heel, VCG = 0.00)

DISPL

(SW)

DISPL

(FW) KML KMT MT1 TPcm LCB LCF GMr

[meters] [MT] [MT] [m] [m] [MT-m] [MT] [m] [m] [m]

3.00 665.72 649.48 15.142 12.904 2.72 1.51 15.621 15.229 2.954

3.05 673.2 656.77 14.968 12.626 2.72 1.48 15.617 15.228 2.873

3.10 680.55 663.94 14.808 12.357 2.72 1.46 15.613 15.228 2.793

3.15 687.77 670.99 14.67 12.102 2.72 1.43 15.608 15.232 2.751

3.20 694.87 677.92 14.545 11.857 2.73 1.41 15.605 15.236 2.709

3.25 701.86 684.73 14.435 11.621 2.73 1.39 15.601 15.241 2.718

3.30 708.74 691.45 14.34 11.397 2.74 1.36 15.597 15.248 2.727

3.35 715.5 698.04 14.258 11.181 2.75 1.34 15.594 15.256 2.958

3.40 722.19 704.57 15.675 11.304 3.05 1.36 15.592 15.746 3.189

3.45 728.96 711.17 15.744 11.139 3.1 1.35 15.593 15.813 3.321

3.50 735.65 717.70 15.823 10.985 3.14 1.33 15.596 15.883 3.453

3.55 742.27 724.16 15.913 10.843 3.19 1.32 15.599 15.958 3.590

3.60 748.83 730.56 16.009 10.712 3.23 1.31 15.602 16.037 3.727

3.65 755.34 736.91 16.112 10.593 3.28 1.30 15.606 16.12 3.854

3.70 761.79 743.20 16.222 10.471 3.33 1.29 15.611 16.21 3.981

3.75 768.21 749.47 16.353 10.401 3.39 1.28 15.616 16.302 4.179

3.80 774.64 755.74 16.487 10.41 3.45 1.29 15.622 16.376 4.378

3.85 781.09 762.03 16.617 10.365 3.5 1.29 15.629 16.462 4.517

3.90 787.57 768.35 16.766 10.351 3.56 1.30 15.636 16.541 4.816

3.95 794.09 774.71 16.921 10.37 3.63 1.31 15.644 16.615 4.816

4.00 800.68 781.14 17.084 10.393 3.69 1.32 15.652 16.688 -

4.05 807.33 787.63 17.253 10.417 3.76 1.34 15.661 16.758 -

4.10 814.05 794.19 17.418 10.441 3.83 1.35 15.67 16.827 -

4.15 820.84 800.81 17.591 10.472 3.9 1.37 15.68 16.896 -

4.20 827.71 807.51 17.789 10.52 3.97 1.38 15.691 16.963 -

4.25 834.68 814.31 17.998 10.57 4.05 1.40 15.701 17.029 -

4.30 841.74 821.20 18.228 10.624 4.14 1.42 15.713 17.099 -

4.35 848.91 828.20 18.474 10.681 4.23 1.44 15.725 17.174 -

4.40 856.19 835.30 18.729 10.746 4.33 1.47 15.738 17.248 -

4.45 863.6 842.53 19.002 10.826 4.43 1.50 15.751 17.311 -

4.50 871.14 849.88 19.293 10.909 4.54 1.52 15.765 17.378 -

NOTES: 1. KML and KMT are measured from baseline.

2. LCB and LCF are measured aft of Frame 0

3. MT1 is defined for trim measured over the length between perpendiculars (LBP = 37.06 meters). Values shown are for an assumed VCG of zero meters above baseline. For non-zero VCG the tabulated values are adjusted as shown below.

where: MT1' = MT1 - ( (VCG' * DISPL) / (100 * LBP) )

MT1' = adjusted moment to trim 1 cm MT1 = moment to trim 1 cm from table VCG' = non-zero VCG measured from baseline

DISPL = displacement

TANK CAPACITY TABLE

TANK COMPT NO 100% CAP

[liters]

% WEIGHT

[MT]

VCG

[m]

LCG

[m]

TCG

[m]

FS Mom [MT-m] Full Slack

Diesel Oil Tanks F.O. Storage (S) 5-12-1 39,240 95 32.43 1.182 9.800 6.847 10.96 25.34 F.O. Storage (P) 5-12-2 39,240 95 32.43 1.182 9.800 -6.869 10.96 25.26

F.O. DT (S) 4-12-1 11,887 95 9.82 3.534 9.082 7.173 2.31 2.35

F.O. DT (P) 4-12-2 11,887 95 9.82 3.534 9.082 -7.187 2.31 2.35

EDG Storage 01-30-02 585 95 0.48 10.303 19.831 -2.138 0.01 0.01

TOTAL Diesel Oil 102,839 95 84.99 1.777 9.686 -0.018 26.55 55.31

Hydraulic Oil Tanks HO Storage 4- 4-1 3,184 95 2.79 3.464 3.263 6.710 0.19 0.19

Lube Oil Tanks LO Storage* 4- 4-3 2,955 95 2.69 3.359 3.262 7.668 0.00 0.08

Fresh Water Tanks Fresh Water S 2- 4-1 5,374 100 5.37 6.580 5.200 0.610 0.57 0.78 Fresh Water P 2- 4-2 5,374 100 5.37 6.580 5.200 -0.610 0.57 0.78

Total: Fresh Water 10,748 100 10.74 6.580 5.200 0.00 1.14 1.56

SW Ballast Tanks SW Ballast 1 (S) 5- 3-1 33,650 100 34.49 3.836 1.238 6.446 19.39 23.29 SW Ballast 1 (P) 5- 3-2 33,650 100 34.49 3.836 1.238 -6.446 19.39 23.29 SW Ballast 2 (S) 5-20-1 79,860 100 81.86 1.957 15.600 6.897 4.65 51.56 SW Ballast 2 (P) 5-20-2 79,860 100 81.86 1.957 15.600 -6.897 4.65 51.56 SW Ballast 3 (S) 4-40-1 13,131 100 13.46 3.615 27.787 7.174 2.41 3.12 SW Ballast 3 (P) 4-40-2 13,131 100 13.46 3.615 27.787 -7.174 2.41 3.12

TOTAL SW Ballast 253,282 100 259.62 2.628 13.048 0.000 52.90 155.94

Miscellaneous Tanks GW Hldg Tk 3-20-2 24,798 95 24.15 6.006 14.300 -5.984 8.18 29.85 Oily Waste 4-16-2 2,880 95 2.80 3.675 11.047 -6.669 0.24 0.24 Waste Oil 4-16-4 2,733 95 2.40 3.633 11.046 -7.700 0.10 0.10 Sewage Holding 4- 4-2 6,247 95 6.08 3.444 3.262 -7.180 1.17 1.13

NOTES:

1. VCG is measured upward from baseline.

2. LCG is measured aft Frame 0.

3. TCG is measured starboard (+) or port (-) of centerline.

INBOARD PROFILE

MAIN DECK PLAN

EFFECT OF ICING ON GM AVAILABLE

Any accumulation of ice topside will cause a reduction in GM Available. An approximation of this loss may be obtained by estimating the average thickness of ice over all of the exposed areas above the waterline, including masts, A-frame, rails, rigging, etc, as well as bulkheads and decks. Based on IMO and USCG guidance it is assumed that ice build-up on horizontal surfaces will be twice the thickness of build-up on vertical surfaces.

The effect of topside icing on GM Available is shown on the graph on sheet 23, where the curve of GM Required is repeated from sheet 18. Ice accumulation of the following thickness is shown on the chart. Other ice thicknesses will have proportional effects.

Ice thickness Added weight VCG LCG TCG Horiz (cm) Vert (cm) (MT) (m) (m) (m)

3.3 1.7 34.31 9.67 17.32 0.40

1.7 0.8 17.16 9.67 17.32 0.40

The magnitude of the loss in GM Available indicates that significant accumulation of ice can result in a deficient stability condition. Conditions favorable to ice formation should be avoided when possible. When arrival in sheltered waters is not imminent, stability improvement measures should be considered and ice removal procedures should be initiated early so that substantial amounts do not accumulate.

Art Anderson Associates, 202 Pacific Avenue, Bremerton WA 98337-1932

NOAA Ship FERDINAND R. HASSLER TRIM AND STABILITY Dwg M286-097-C023 Rev: B BOOKLET Sheet 24

CONDITION: I -- Lightship

LOADING SUMMARY

WEIGHT FS Mom

ITEM % (MT) Lever Moment Lever Moment Lever Moment (MT-m )

PERSONNEL AND EFFECTS

Crew & Effects 8.040 14.290 0.000

CONSTANT STORES

Spares & Repair Parts 7.500 19.330 3.110

PROVISIONS & STORES 7.510 17.180 -2.220

TANKAGE

Fuel Oil Hydraulic Oil Lube Oil Fresh Water Salt Water Ballast Oily Waste Waste Water

TOTAL TANKAGE

MISSION LOADS 8.310 21.390 -0.910

ICE ACCRETION

MISCELLANEOUS DWT

LIGHT SHIP 666.64 5.800 3866.500 16.340 10892.900 -0.180 -121.000

TOTAL DISPLACEMENT 666.64 5.800 3866.500 16.340 10892.900 -0.180 -121.000 0.00

TRIM

Baseline draft at LCF (Tm) From Hydrostatics Table 3.006 m Longitudinal center of gravity, aft FP (LCG) From Loading Summary 16.340 m Longitudinal center of buoyancy, aft FP (LCB) From Hydrostatics Table 15.621 m Trimming lever (TL) = LCG - LCB 0.719 m Moment to alter trim 1 cm (KML) From Hydrostatics Table 15.121 m Moment to alter trim 1 cm (MT1) = ( ( KML - VCG) * DISPL ) / (100 * LBP ) 1.677 MT-m Trim (positive is trim aft) (TRIM) = ( TL * DISPL ) / ( 100 * MT1 ) 2.858 m Longitudinal center of flotation, aft FP (LCF) From Hydrostatics Table 15.230 m Draft at Midship (Tx) = Tm + ( TRIM * (17.225 - LCF ) / LBP ) 3.160 m Draft Marks Fwd (DMfwd) = Tm + ( TRIM * ( 1.300 - LCF ) / LBP ) 1.932 m Draft Marks Aft (DMaft) = Tm + ( TRIM * (29.700 - LCF ) / LBP) 4.122 m

STABILITY

Transverse KM (KMt) From Hydrostatics Table 12.870 m Vertical center of gravity (VCG) From Loading Summary 5.800 m Metacentric height (GM) = KMt - VCG 7.070 m Free surface correction (FS Corr) = - FS Mom / DISPL 0.000 m GM Available = GM + FS Corr 7.070 m GM Required Interpolated from Required GM Curves 2.944 m GM Margin = GM Available - GM Required 4.126 m

HEEL

Moment to alter heel 1° (MH1) = 0.01745 * GM Available * DISPL 82.24 MT-m Transverse moment (TMOM) From Loading Summary -121.00 MT-m Heel (positive is to stbd) = TMOM / MH1 -1.47 Deg

VCG Above BL LCG Aft Frame 0 TCG from CL (+S,-P)

BOOKLET Sheet 25

CONDITION: I -- Lightship

TANK LOADING TABLE

WEIGHT FS Mom

ITEM % (MT) Lever Moment Lever Moment Lever Moment (MT-m )

Fuel Oil Tanks FO Stor(S) (5-12-1) 1.243 9.822 6.857

FO Stor(P) (5-12-2) 1.243 9.822 -6.857

FO DT(S) (4-12-1) 3.589 9.084 7.173

FO DT(P) (4-12-2) 3.589 9.084 -7.173

EDG Stor (01-30-02) 10.339 19.832 -2.137

Total: Fuel Oil

Hydraulic Oil Tanks Hyd Oil (4- 4-1) 3.464 3.263 6.710

Total: Hydraulic Oil

Lube Oil Tanks Lube Oil (4- 4-3) 3.423 3.262 7.668

Total: Lube Oil

Fresh Water Tanks FW Tank (S) (2- 4-1) 6.580 5.200 0.610

FW Tank (P) (2- 4-2) 6.580 5.200 -0.610

Total: Fresh Water

Salt Water Ballast Tanks SW Blst 1(S) (5- 3-1) 3.836 1.238 6.446

SW Blst 1(P) (5- 3-2) 3.836 1.238 -6.446

SW Blst 2(S) (5-20-1) 1.957 15.600 6.897

SW Blst 2(P) (5-20-2) 1.957 15.600 -6.897

SW Blst 3(S) (4-40-1) 3.615 27.787 7.174

SW Blst 3(P) (4-40-2) 3.615 27.787 -7.174

Total: Salt Water Blst

Waste Oil Tanks Waste Oil (4-16-4) 3.633 11.046 -7.700

Total: Waste Oil

Waste Water Tanks GW Hldg Tk (3-20-2) 6.006 14.300 -5.984

Oily Waste (4-16-2) 3.675 11.047 -6.669

Sewage Hldg (4- 4-2) 3.444 3.262 -7.180

Total: Waste Water

BOOKLET Sheet 26

CONDITION: E -- Extreme Load Departure

LOADING SUMMARY

WEIGHT FS Mom

ITEM % (MT) Lever Moment Lever Moment Lever Moment (MT-m )

PERSONNEL AND EFFECTS

Crew & Effects 2.16 8.040 17.370 14.290 30.870 0.000 0.000

CONSTANT STORES

Spares & Repair Parts 6.00 7.500 45.000 19.330 115.980 3.110 18.660

PROVISIONS & STORES 1.04 7.510 7.810 17.180 17.870 -2.220 -2.310

TANKAGE

Fuel Oil 68.78 1.976 135.920 9.681 665.860 0.946 65.070 61.0

Hydraulic Oil 2.79 3.464 9.660 3.263 9.100 6.710 18.720 0.2

Lube Oil 0.63 3.423 2.160 3.262 2.060 7.668 4.830 0.1

Fresh Water 10.22 6.579 67.240 5.200 53.140 0.000 0.000 1.6

Salt Water Ballast Oily Waste Waste Water 1.02 3.441 3.510 3.265 3.330 -7.176 -7.320 1.1

TOTAL TANKAGE 83.44 2.619 218.490 8.791 733.490 0.974 81.300 63.9

MISSION LOADS 3.42 8.310 28.420 21.390 73.150 -0.910 -3.110

ICE ACCRETION

MISCELLANEOUS DWT 7.46 7.010 52.295 24.700 184.262 0.000 0.000

LIGHT SHIP 666.64 5.800 3866.500 16.340 10892.900 -0.180 -121.000

TOTAL DISPLACEMENT 770.16 5.500 4235.885 15.640 12048.522 -0.030 -26.460 63.91

TRIM

Baseline draft at LCF (Tm) From Hydrostatics Table 3.765 m Longitudinal center of gravity, aft FP (LCG) From Loading Summary 15.640 m Longitudinal center of buoyancy, aft FP (LCB) From Hydrostatics Table 15.618 m Trimming lever (TL) = LCG - LCB 0.022 m Moment to alter trim 1 cm (KML) From Hydrostatics Table 16.394 m Moment to alter trim 1 cm (MT1) = ( ( KML - VCG) * DISPL ) / (100 * LBP ) 2.264 MT-m Trim (positive is trim aft) (TRIM) = ( TL * DISPL ) / ( 100 * MT1 ) 0.075 m Longitudinal center of flotation, aft FP (LCF) From Hydrostatics Table 16.320 m Draft at Midship (Tx) = Tm + ( TRIM * (17.225 - LCF ) / LBP ) 3.767 m Draft Marks Fwd (DMfwd) = Tm + ( TRIM * ( 1.300 - LCF ) / LBP ) 3.735 m Draft Marks Aft (DMaft) = Tm + ( TRIM * (29.700 - LCF ) / LBP) 3.792 m

STABILITY

Transverse KM (KMt) From Hydrostatics Table 10.404 m Vertical center of gravity (VCG) From Loading Summary 5.500 m Metacentric height (GM) = KMt - VCG 4.904 m Free surface correction (FS Corr) = - FS Mom / DISPL -0.083 m GM Available = GM + FS Corr 4.821 m GM Required Interpolated from Required GM Curves 4.239 m GM Margin = GM Available - GM Required 0.582 m

HEEL

Moment to alter heel 1° (MH1) = 0.01745 * GM Available * DISPL 64.79 MT-m Transverse moment (TMOM) From Loading Summary -26.46 MT-m Heel (positive is to stbd) = TMOM / MH1 -0.41 Deg

BOOKLET Sheet 27

CONDITION: E -- Extreme Load Departure

TANK LOADING TABLE

WEIGHT FS Mom

ITEM % (MT) Lever Moment Lever Moment Lever Moment (MT-m )

Fuel Oil Tanks FO Stor(S) (5-12-1) 85 29.15 1.243 36.230 9.822 286.310 6.857 199.880 28.16

FO Stor(P) (5-12-2) 57 19.51 1.243 24.250 9.822 191.630 -6.857 -133.780 28.16

FO DT(S) (4-12-1) 95 9.82 3.589 35.240 9.084 89.200 7.173 70.440 2.31

FO DT(P) (4-12-2) 95 9.82 3.589 35.240 9.084 89.200 -7.173 -70.440 2.31

EDG Stor (01-30-02) 95 0.48 10.339 4.960 19.832 9.520 -2.137 -1.030 0.01

Total: Fuel Oil 68.78 1.976 135.920 9.681 665.860 0.946 65.070 60.95

Hydraulic Oil Tanks Hyd Oil (4- 4-1) 95 2.79 3.464 9.660 3.263 9.100 6.710 18.720 0.19

Total: Hydraulic Oil 2.79 3.464 9.660 3.263 9.100 6.710 18.72 0.19

Lube Oil Tanks Lube Oil (4- 4-3) 23 0.63 3.423 2.160 3.262 2.060 7.668 4.830 0.08

Total: Lube Oil 0.63 3.423 2.160 3.262 2.060 7.668 4.83 0.08

Fresh Water Tanks FW Tank (S) (2- 4-1) 95 5.11 6.580 33.620 5.200 26.570 0.610 3.120 0.78

FW Tank (P) (2- 4-2) 95 5.11 6.580 33.620 5.200 26.570 -0.610 -3.120 0.78

Total: Fresh Water 10.22 6.579 67.240 5.200 53.140 0.000 0.000 1.56

Salt Water Ballast Tanks SW Blst 1(S) (5- 3-1) 3.836 1.238 6.446

SW Blst 1(P) (5- 3-2) 3.836 1.238 -6.446

SW Blst 2(S) (5-20-1) 1.957 15.600 6.897

SW Blst 2(P) (5-20-2) 1.957 15.600 -6.897

SW Blst 3(S) (4-40-1) 3.615 27.787 7.174

SW Blst 3(P) (4-40-2) 3.615 27.787 -7.174

Total: Salt Water Blst

Waste Oil Tanks Waste Oil (4-16-4) 3.633 11.046 -7.700

Total: Waste Oil

Waste Water Tanks GW Hldg Tk (3-20-2) 6.006 14.300 -5.984

Oily Waste (4-16-2) 3.675 11.047 -6.669

Sewage Hldg (4- 4-2) 16 1.02 3.444 3.510 3.262 3.330 -7.180 -7.320 1.13

Total: Waste Water 1.02 3.441 3.510 3.265 3.330 -7.176 -7.320 1.13

BOOKLET Sheet 28

CONDITION: C1 -- Full Load Departure

LOADING SUMMARY

WEIGHT FS Mom

ITEM % (MT) Lever Moment Lever Moment Lever Moment (MT-m )

PERSONNEL AND EFFECTS

Crew & Effects 2.16 8.040 17.370 14.290 30.870 0.000 0.000

CONSTANT STORES

Spares & Repair Parts 6.00 7.500 45.000 19.330 115.980 3.110 18.660

PROVISIONS & STORES 1.04 7.510 7.810 17.180 17.870 -2.220 -2.310

TANKAGE

Fuel Oil 68.78 1.976 135.920 9.681 665.860 0.946 65.070 60.95

Hydraulic Oil 2.79 3.464 9.660 3.263 9.100 6.710 18.720 0.19

Lube Oil 0.63 3.423 2.160 3.262 2.060 7.668 4.830 0.08

Fresh Water 10.22 6.579 67.240 5.200 53.140 0.000 0.000 1.56

Salt Water Ballast Oily Waste Waste Water

TOTAL TANKAGE 82.42 2.608 214.980 8.859 730.160 1.075 88.620 62.78

MISSION LOADS 3.42 8.310 28.420 21.390 73.150 -0.910 -3.110

ICE ACCRETION

MISCELLANEOUS DWT

LIGHT SHIP 666.64 5.800 3866.500 16.340 10892.900 -0.180 -121.000

TOTAL DISPLACEMENT 761.68 5.490 4180.080 15.570 11860.930 -0.030 -19.140 62.78

TRIM

Baseline draft at LCF (Tm) From Hydrostatics Table 3.699 m Longitudinal center of gravity, aft FP (LCG) From Loading Summary 15.570 m Longitudinal center of buoyancy, aft FP (LCB) From Hydrostatics Table 15.611 m Trimming lever (TL) = LCG - LCB -0.041 m Moment to alter trim 1 cm (KML) From Hydrostatics Table 16.220 m Moment to alter trim 1 cm (MT1) = ( ( KML - VCG) * DISPL ) / (100 * LBP ) 2.205 MT-m Trim (positive is trim aft) (TRIM) = ( TL * DISPL ) / ( 100 * MT1 ) -0.142 m Longitudinal center of flotation, aft FP (LCF) From Hydrostatics Table 16.210 m Draft at Midship (Tx) = Tm + ( TRIM * (17.225 - LCF ) / LBP ) 3.695 m Draft Marks Fwd (DMfwd) = Tm + ( TRIM * ( 1.300 - LCF ) / LBP ) 3.756 m Draft Marks Aft (DMaft) = Tm + ( TRIM * (29.700 - LCF ) / LBP) 3.647 m

STABILITY

Transverse KM (KMt) From Hydrostatics Table 10.473 m Vertical center of gravity (VCG) From Loading Summary 5.490 m Metacentric height (GM) = KMt - VCG 4.983 m Free surface correction (FS Corr) = - FS Mom / DISPL -0.082 m GM Available = GM + FS Corr 4.901 m GM Required Interpolated from Required GM Curves 3.978 m GM Margin = GM Available - GM Required 0.923 m

HEEL

Moment to alter heel 1° (MH1) = 0.01745 * GM Available * DISPL 65.14 MT-m Transverse moment (TMOM) From Loading Summary -19.14 MT-m Heel (positive is to stbd) = TMOM / MH1 -0.29 Deg

BOOKLET Sheet 29