RFP_GLIB Ice Testing_A0001_clean.pdf

PDF 2 MB Posted Oct 12, 2022

Attached to: US Coast Guard Ice Model Testing for the Great Lakes Icebreaking (GLIB) program
Solicitation number: 70Z02322R93260001
Issued by: Department of Homeland Security US Coast Guard

About this file

Written by GovTribe AI · Dec 28, 2023

This is a request for proposal issued by the United States Coast Guard for ice model testing services in support of the Great Lakes Icebreaking Program. The Coast Guard requires physical model testing of a 200-foot icebreaker, 250-foot icebreaker with triple screw or twin screw propulsion options, and a 141-foot icebreaking tug to identify performance parameters in open water and ice conditions. Testing will include resistance and powering analysis, maneuverability assessments, and icebreaking simulations. The period of performance is 18 months from award. Proposals are due by October 26, 2022 and shall include pricing for base and optional tasks. The solicitation is unrestricted and available to all responsible offerors.

View the file

Other files

File	Type	Posted
RFP_GLIB Ice Testing_A0001_track changes.pdf	PDF	Oct 12, 2022
Responses to RFP Questions_A0001.pdf	PDF	Oct 12, 2022
RFP_GLIB Ice Testing_25 Aug 2022.pdf	PDF	Aug 25, 2022
Attachment L-2 Pricing Worksheet.xlsx	XLSX spreadsheet	Aug 25, 2022

On GovTribe

Work with this file

Download the original file
Contacts named in this file
Similar government files
Ask GovTribe AI about this file

Try for free Login

Text version

The file's text, extracted by GovTribe without its formatting.

Request for Proposal

Agency: United States Coast Guard (USCG)

Requirement: Ice Model Testing Services

Solicitation # 70Z02322R93260001

Amendment #1 (A0001)

Date: 12 October 2022

Program: Great Lakes Icebreaking Program, CG-9326GL

Contracts: Major Systems, CG-9125-1

Submit offers to: Kayode.A.Adewole@uscg.mil;

Jonathan.L.Bryant@uscg.mil; and

Christopher.A.Wellons@uscg.mil mailto:Kayode.A.Adewole@uscg.mil mailto:Jonathan.L.Bryant@uscg.mil mailto:Christopher.A.Wellons@uscg.mil

Content

This is a combined synopsis/solicitation for commercial items prepared in accordance with the format in FAR subpart 12.6, Streamlined Procedures for Evaluation and Solicitation for

Commercial Items, and FAR subpart 13.5, Simplified Procedures for Certain Commercial Items supplemented with additional information included in this notice. This announcement constitutes the only solicitation; proposals are being requested. This is not a FAR Part 15, Contracting by Negotiation, acquisition.

Solicitation number 70Z02322R93260001 is issued as a request for proposal (RFP).

The applicable North American Industry Classification Standard Code is 336611. The small business size standard is 1,250 employees. This is an unrestricted requirement. All responsible sources may submit an offer, which shall be considered by the agency.

Contract type: Firm-Fixed-Price (FFP) contract.

See section B for the list of line items.

See section C for the Statement of Work (SOW).

The Period of Performance is 18 months from date of award.

The provision at FAR 52.212-1 Instructions to Offerors -- Commercial, applies to this acquisition along with the addendum contained in Section L.

The provision at FAR 52.212-2 Evaluation – Commercial Items does NOT apply to this acquisition. See Evaluation procedures in Section M.

Offerors shall include a completed copy of the provision at 52.212-3, Offeror Representations and Certifications -- Commercial Items, with their offer. A link to this provision has been included in section K for convenience.

FAR clause 52.212-4 Contract Terms and Conditions -- Commercial Items, applies to this acquisition along with other terms and condition contained in Section I and throughout this solicitation.

FAR clause 52.212-5 Contract Terms and Conditions Required To Implement Statutes Or

Executive Orders -- Commercial Items, applies to this acquisition, cited clauses is contained in

Section I.

Any additional terms and condition is contained in Section H.

Offers are due 1400 Eastern Time (ET) on 26 October 2022.

All questions and/or clarifications should be directed to the Contracting Officer at

Kayode.A.Adewole@uscg.mil, Contract Specialist(s) at Jonathan.L.Bryant@uscg.mil, and

Christopher.A.Wellons@uscg.mil.

mailto:Kayode.A.Adewole@uscg.mil mailto:Jonathan.L.Bryant@uscg.mil

Section B—Supplies or services and prices/costs

CLINs Description Total Price Timeline

0001 Program Management and Reports Base Period 0002 (Informational CLIN) Task 1 - 200Ft Icebreaker (Hull A) NSP

Base Period 0002AA

Model Development/Construction 0002AB Ice Tests

0002AC (Optional Task)

Optional Open Water Tests

Optional: After completion of SLIN

0002AB: Task 1 Ice

Tests 0003 (Informational CLIN) Task 2 - 141ft Icebreaking Tug, Twin Screw (Hull C) NSP

Base 0003AA

Model Development/Construction 0003AB Ice Tests

0003AC (Optional Task)

Optional Open Water Tests

Optional: After completion of SLIN

0003AB: Task 2 Ice

Tests 0004 (Informational CLIN) Optional: Task 3 - 250ft Icebreaker, Triple Screw with Bow

Unit (Hull B1) NSP

Optional: After completion of CLN

0002 and 0003.

0004AA (Optional Task)

Optional

Model Development/Construction 0004AB (Optional Task) Ice Tests 0004AC (Optional Task)

Open Water Tests 0005 (Informational CLIN) Optional: Task 4 - 250ft Icebreaker, Twin Screw ( Hull B2) NSP

Optional: After completion of CLN

0002 and 0003.

0005AA (Optional Task)

Optional

Model Development/Construction 0005AB (Optional Task) Ice Tests 0005AC (Optional Task)

Open Water Tests

(End of Section)

Section C—Description/specifications/statement of work

Statement of Work (SOW)

USCG ICEBREAKER MODEL TESTS SERIES IN OPEN WATER AND ICE

1. SCOPE

The USCG is requesting Ice Model Testing Services in this solicitation on behalf of the Great Lakes Icebreaking (CG-

9326GL) program. CG-9326GL program requires physical model testing to identify resistance, powering, and maneuvering parameters in open water and in ice for a 200 FT USCG icebreaker (referenced as “Hull A”), 250 FT USCG icebreaker

(referenced as “Hulls B1 and B2”) and 141 FT icebreaking tugboat (referenced as “Hull C”). The 250 FT icebreaker concept has two (2) possible propulsion option(s): triple azimuthal propulsion with two stern and one bow units (Hull B1) and twin, stern-located, azimuthal propulsion (Hull B2). Physical scale model testing will provide estimates of open water and icebreaking resistance and maneuvering for all Hulls and assist developing the baseline requirements for the acquisition of the icebreaking ships. These tests shall be performed over a range of speeds, displacements, and ice thicknesses (see requirements).

This SOW specifies the required model test program. Additionally, the program includes four (4) independent Tasks or sub-programs attributed to a 200 FT icebreaker (Hull A), 250 FT icebreaker (Hull B1 and Hull B2-optional), and a 141 FT icebreaking tug (Hull C). See objectives below.

2. OBJECTIVES

Study the performance of the vessels in ice and estimate level ice resistance and powering based on completed model test results

Identify resistance and powering parameters in open water

Study new icebreaker performance in the brash ice of frequently used channels and maneuverability in ice

For Hull B1 and B2 250 FT icebreaker model tests, compare the feasibility and efficiency of a triple screw vessel alternative versus twin screw

3. REQUIREMENTS (See below)

4. TASK 1 SCOPE OF WORK: 200 FT ICEBREAKER (HULL A)

4.1 ICE TESTS

4.1.1 STANDARD TEST PLAN DEVELOPMENT AND INSTRUMENT CALIBRATION

Prior to starting model design, construction or test preparations, the Contractor shall prepare a Test Plan that defines the following items:

1. Detailed project schedule.

2. Model construction plan, description of model, description and drawings of selected stock propellers.

3. Methodology and procedures used to ensure target model ice model properties (i.e. thickness, flexural and compressive strength, elastic modulus, model-ice coefficient of friction, temperature) are repeatable for the proposed model scale and specify the test facilities standard for allowable deviation and/or tolerance for each property.

4. Methodology and procedures used to ensure target power is correctly scaled and repeatable.

5. Methodology and procedures used to ensure the model coating/paint provides the target model-ice coefficient of friction.

6. Instrumentation list including calibration methods, calibration ranges, transducer resolution and accuracy, sensor arrangement installation details, sampling and filtering frequencies, data recording and archiving methods.

7. Identify the data analysis available at the end of each test run as a quick-look to assess the validity of each run and quality of data collected.

8. Description of ice property measurement techniques and typical ice properties for the range of thicknesses proposed including flexural strength, crushing strength, and elastic modulus.

9. Correlation data for models previously tested at same facility versus full-scale trials.

10. Plan for video and still photography, including underwater video.

11. Documentation of setups and tests.

12. A detailed run list for all planned tests.

13. Specifications for data analyses for each type of test.

A draft Test Plan shall be delivered to the USCG for review and approval in the Contractor’s standard format. A final version of the Test Plan shall be prepared and delivered after receipt of USCG comments.

Instruments shall be calibrated to traceable standards prior to installation and shall be installed on the model, carriage, or in the basin as appropriate. Raw and fit calibration results shall be provided to the USCG. Sensors shall be calibrated to read out in model scale engineering units.

The Ice testing shall include the basin, carriage, model outfitting, model, instrumentation and video setup, completion of testing, and demobilization. The ice test program shall be carried out by the test facility personnel in the presence of USCG oversight representatives.

4.1.2 MODEL ICE

The model ice material shall be selected by the test facility and reflect fresh water first year ice flexural strength of 760 kPa and a dynamic friction coefficient target of 0.055.

Level ice: thickness 0.61 m and 0.91 m (full scale)

Brash ice: thickness 1.22 m and 2.44 m, width 30-35 m (full scale)

The following ice properties shall be measured:

Level ice o Ice thickness o Flexural strength o Young’s modulus in bending o Crushing strength o Dynamic friction coefficient o Channel width and geometry

Non-frozen brash ice o Thickness and the profile of the brash ice o Ice piece size

4.1.3 MODEL

Model scale selection is based on the test facility’s available range of model scale ice thickness and mechanical properties as well as available stock propeller diameter. If no stock propeller of suitable diameter is available, it can be manufactured to the desirable model scale. Model scale shall be no less than 1:18 and selected to align with the basin’s capabilities. Model shall be equipped with azimuthing podded propulsion. The surface of the model for ice tests shall be treated to achieve correct friction coefficient between the model and ice to correspond to a new painted (INERTA 160 or similar ice resistant coating) surface in full scale.

Table 1. Principal Characteristics, Hull A

Ship scale

Length overall 200 ft. 70 m

Length between perpendiculars 192 ft. 58.5 m

Beam 57.3 ft. 17.5 m

Design draft 15.5 ft. 4.7 m

Propeller diameter 9.0 ft. 2.74 m

Propulsion 2x ICE 1400 AZIPODS or similar

Shaft power 2x 4470 shp 2x 3350 kW

Figure 1. Hull A. Conceptual

4.1.4 TOWED PROPULSION TEST (OPTIONAL AS PER FACILITY PRACTICE)

Towed propulsion tests in ice may be eliminated if not part of test facility standard practice.

The following parameters shall be measured:

Towing force

Speed of model

Propeller RPM

Shaft torque/power

The following video angles shall be used:

One view from the towing carriage

One from the side of basin

Underwater view from the side

Underwater view from the bottom

The following conditions shall be tested:

Level ice, Hi = 0.61 m, three speeds ahead (3, 5 and 7 knots)

Level ice, Hi = 0.61 m, one speed astern (3 knots)

Level ice, Hi = 0.91 m, three speeds ahead (2, 3 and 4 knots)

Level ice, Hi = 0.91 m, one speed astern (3 knots)

Brash ice, Hi = 1.22 m, three speeds ahead (4, 7 and 10 knots)

Brash ice, Hi = 1.22 m, one speed astern (5 knots)

Brash ice, Hi = 2.44 m, three speeds ahead (2, 3 and 4 knots)

Brash ice, Hi = 2.44 m, one speed astern (3 knots)

4.1.5 SELF- PROPULSION TESTS

Tests shall be performed as self-propulsion tests using three power levels, ahead and astern.

Propeller torque

Thrust of Azimuth thrusters (If the propeller shaft has a downward angle, there will be a small correction between the measured force and the propeller thrust)

One from the side of basin

Level ice, Hi = 0.61 m, three power levels (40, 70 and 100%) ahead

Level ice, Hi = 0.61 m, three power levels (40, 70 and 100%) astern

Level ice, Hi = 0.61 m, Breaking out of the channel, One run ahead and one run astern

Level ice, Hi = 0.91 m, three power levels (40, 70 and 100%) ahead

Level ice, Hi = 0.91 m, three power levels (40, 70 and 100%) astern

Level ice, Hi = 0.91 m, Breaking out of the channel, One run ahead and one run astern

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) ahead

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) astern

Brash ice, Hi = 2.44 m, three power levels (40, 70 and 100%) ahead

Brash ice, Hi = 2.44 m, three power levels (40, 70 and 100%) astern

4.1.6 MANEUVERING TESTS

Tests shall be performed as self-propulsion tests by a skilled operator provided by the test facility

The following model specific measurements shall be taken using position of the model as a function of time; x(t), y(t):

Orientation angle of the model as a function of time (from video records) [F(t)]

Speed of the model [v]

Azimuthing propulsor angle [α]

Propeller thrust [T]

Propeller torque [Q]

Propeller RPM [n]

Time to complete maneuvers [s]

One from the side of basin

The following tests shall be performed:

Turning circle tests. Level ice, Hi = 0.61m

The turning capabilities of the model shall be measured by making one turn into the ice sheet. A test will start by advancing in level ice, then the azimuthing propulsors are turned into a pre-set angle. The test results shall show the track of the turning model, and from this track the turning circle shall be estimated. The turning circles are performed port and starboard.

Turning circle in level ice, Hi = 0.61 m, P/S turn ahead, power level 100 %

Turning circle in level ice, Hi = 0.61 m, P/S turn astern, power level 100 %

Maneuvering tests. Level ice, Hi = 0.91 m

Breaking out of the track - One track will be made by the ship into selected side of the model ice sheet. Tests shall be conducted ahead and astern, by breaking out of the channel and achieving at least a 90 degree turn to completely enter the ice sheet. The track may have some ice floes in it. In the test, the model will first advance along the track to the agreed speed. Then the azimuthing propulsors are turned and the track of the model is recorded. The test is terminated when the model achieves at least a 90 degree turn and whole model is in level ice or when the ice sheet area allocated for the test is used. A similar test will be made when the model is moving astern. Tests shall be performed both turning to port and turning to starboard.

Star maneuver - One star maneuver shall be made. An appropriately wide area of the ice sheet is allocated for each test. The target width of the turning space is 300 FT in full scale. The time needed for the maneuver and the ship position and orientation angle will be recorded.

The following conditions shall be tested:

Breaking out of the track, own channel, Hi = 0.91 m, P/S ahead, speed ~5 knots

Breaking out of the track, own channel Hi = 0.91 m, P/S astern, speed ~4 knots

Star maneuver in level ice, Hi = 0.91 m, one turn

4.1.7 OPERATIONAL TEST

Cutting free beset vessel – After the level ice run is completed the object simulating a beset vessel of approximately 30 m wide will be placed in the middle of the broken channel and the cutting free maneuver will be performed by breaking out of the channel astern and going along the vessel, returning into the channel behind the vessel and then breaking out to the other side and going along the vessel ahead completing the maneuver by returning to the channel ahead of the beset vessel.

Cutting free beset vessel, Hi = 0.91 m one maneuver

4.1.8 ICE TEST REPORT

The test report will include the following:

Background of the test series, main objectives and other pertinent general information

Description of the models

Short description of the test methods

Description of the performed tests

Tables and charts:

o Plots and charts of the model-scale results and full-scale predictions o Plots of predicted ice going capability o Predicted turning capability in tested ice conditions

Results:

o Full-scale predictions of resistance and powering in level ice and brash ice o Predicted ice going capability H-V curve

Recommendation and Conclusions

Appendices:

o A set of the most important photographs o Complete test program o Time histories of the measurements from the tests, results and full-scale prediction o Model drawings o Calibration tests o Ice tank standard test procedure report

In addition to the report, the following shall be delivered:

Digital video of complete test program (all tests and angles recorded)

Edited video showing the representative events

Digital photos of complete test program (all tests and angles recorded)

4.2 OPEN WATER TESTS (SEPARATELY PRICED OPTION)

4.2.1 RESISTANCE AND PROPULSION TESTS

The same model shall be used as for Ice Tests. The open water testing shall include the basin, carriage, model outfitting, model, instrumentation and video setup, completion of testing, and demobilization. Resistance tests shall record model speed and towing force. Propulsion tests shall record model speed, shaft/pod speed, torque, and thrust. Self-propulsion tests shall be conducted at the self-propulsion point and also at 5% of the thrust over the self-propulsion point. Propulsor zero-angle shall be determined. During execution of the test program quick look data shall be provided immediately after each test. The open water test evaluation shall be according to the ITTC 1978 method, using the ITTC 1957 ship-model correlation line.

Bare hull effective horsepower (EHP) resistance tests o (8) Speeds: 4-18 kts in 2 kt increments o (3) Drafts: Full Load, +/- 15%

Fully appended EHP resistance tests

Self-Propelled, stock propellers

Bollard pull ahead and astern o (8) Powers: 80%-100% MCR Ahead and Astern o (1) Draft: Full Load

Wake Survey o The 3-dimensional wake field on the propeller plane shall be measured at two speeds and one draft

Flow Visualization o A flow visualization test shall be carried out at one speed at the full load draft. Paint or dye will be applied in strips to the model.

Added Resistance in Waves o Added resistance in waves testing shall be carried out at one draft for multiple speeds and wave heights/wave period combinations.

4.2.2 OPEN WATER TEST REPORT

Background of the test series, objectives and other pertinent general information

Description of the models

Description of methods and performed tests

Full-scale predictions of resistance and powering, EHP and SHP

Description of results for bollard pull tests

Plots of bow and stern rise and sinkage versus speed as well as trim as a function of ship speed; Fn and speed-length ratio for each displacement

Recommendation and Conclusions

Appendices:

o Complete test program o Time histories and statistics of the measured parameters from the tests, model-scale and full-scale, including total resistance coefficient, frictional resistance coefficient, residual resistance coefficient o Model drawings o Stock Propeller Drawings o Facility standard test procedure report

In addition to the report, the following shall be delivered

5 TASK 2 SCOPE OF WORK: 141 FT ICEBREAKING TUG (HULL C)

5.1 ICE TESTS

5.1.1 STANDARD TEST PLAN DEVELOPMENT AND INSTRUMENT CALIBRATION

Prior to starting model design, construction, or test preparations, the Contractor shall prepare a Test Plan that defines the

1. Detailed project schedule

2. Model construction plan, description of model, description and drawings of selected stock propellers

4. Methodology and procedures used to ensure target power is correctly scaled and repeatable.

5. Methodology and procedures used to ensure the model coating/paint provides the target model-ice coefficient of friction

7. Identify the data analysis available at the end of each test run as a quick-look to assess the validity of each run and quality of data collected

8. Description of ice property measurement techniques and typical ice properties for the range of thicknesses proposed including flexural strength, crushing strength, and elastic modulus

9. Correlation data for models previously tested at same facility versus full-scale trials

10. Plan for video and still photography, including underwater video

11. Documentation of setups and tests

12. A detailed run list for all planned tests

13. Specifications for data analyses for each type of test

A draft Test Plan shall be delivered to the USCG for review and approval in the Contractor’s standard format. A final

Instruments shall be calibrated to traceable standards prior to installation and shall be installed on the model, carriage, or in the basin as appropriate. Raw and fit calibration results shall be provided to the Coast Guard. Sensors shall be calibrated to read out in model scale engineering units.

5.1.2 MODEL ICE

The model ice material shall be selected by the test facility, and reflect fresh water first year ice flexural strength of 760 kPa

Level ice: thickness 0.38 m and 0.61 m (full scale)

Brash ice: thickness 0.76 m and 1.22 m, width 20-23 m (full scale) o Ice thickness o Flexural strength o Young’s modulus in bending o Crushing strength o Ice piece size

5.1.3 MODEL

Model scale selection is based on the test facility’s available range of model scale ice thickness and mechanical properties as well as available stock propeller diameter. If no stock propeller of suitable diameter is available, it can be manufactured to the desirable model scale. Model scale shall be no less than 1:12 and selected to align with the basin’s capabilities. Model shall be equipped with azimuthing podded propulsion. The surface of the model for ice tests shall be treated to achieve correct friction coefficient between the model and ice to correspond to a new painted (INERTA 160 or similar ice resistant coating) surface in full scale.

Table 2. Principal Characteristics, Hull C

Ship scale

Length overall 141.0 ft 43.0 m

Length between perpendiculars 133.4 ft 40.7 m

Beam 36.4 ft 11.1 m

Design draft 12.5 ft 3.8 m

Propeller diameter 6.9 ft 2.1 m

Propulsion 2x DO 960 AZIPODS (or similar)

Shaft power 2x 1341 shp 2x 1000 kW

Figure 2. Hull C Conceptual

5.1.4 TOWED PROPULSION TEST (OPTIONAL AS PER FACILITY PRACTICE)

One from the side of basin

Level ice, Hi = 0.38 m, three speeds ahead (3, 5 and 7 knots)

Level ice, Hi = 0.38 m, one speed astern (3 knots)

Level ice, Hi = 0.61 m, three speeds ahead (2, 3 and 4 knots)

Level ice, Hi = 0.61 m, one speed astern (3 knots)

Brash ice, Hi = 0.76 m, three speeds ahead (4, 7 and 10 knots)

Brash ice, Hi = 0.76 m, one speed astern (5 knots)

Brash ice, Hi = 1.22 m, three speeds ahead (2, 3 and 4 knots)

Brash ice, Hi = 1.22 m, one speed astern (3 knots)

5.1.5 SELF- PROPULSION TESTS

The following parameters shall be measured:

Propeller torque

Thrust of Azimuth thrusters (if the propeller shaft has a downward angle, there will be a small correction, between the measured force and the propeller thrust)

One from the side of basin

Level ice, Hi = 0.38 m, three power levels (40, 70 and 100%) ahead

Level ice, Hi = 0.38 m, three power levels (40, 70 and 100%) astern

Level ice, Hi = 0.61 m, three power levels (40, 70 and 100%) ahead

Level ice, Hi = 0.61 m, three power levels (40, 70 and 100%) astern

Brash ice, Hi = 0.76 m, three power levels (40, 70 and 100%) ahead

Brash ice, Hi = 0.76 m, three power levels (40, 70 and 100%) astern

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) ahead

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) astern

5.1.6 MANEUVERING TESTS

Tests shall be performed as self-propulsion tests by a skilled operator provided by the test facility.

The following model specific measurements shall be taken using position of the model as a function of time; x(t), y(t):

Azimuthing propulsor angle [α]

Propeller thrust [T]

Propeller torque [Q] one view from the towing carriage one from the side of basin underwater view from the side

Turning circle tests. Level ice, Hi = 0.38 m

Turning circle in level ice, Hi = 0.38 m, P/S turn ahead, power level 100%

Turning circle in level ice, Hi = 0.38 m, P/S turn astern, power level 100%

Maneuvering tests. Level ice, Hi = 0.61 m

Breaking out of the track, own channel, Hi = 0.61 m, P/S ahead, speed ~5 knots

Breaking out of the track, own channel Hi = 0.61 m, P/S astern, speed ~4 knots

Star maneuver in level ice, Hi = 0.61 m, one turn

5.1.7 OPERATIONAL TEST

Cutting free beset vessel – After the level ice run is completed the object simulating beset vessel of approximately 30 m wide will be placed in the middle of the broken channel and the cutting free maneuver will be performed by breaking out of the channel astern and going along the vessel, returning into the channel behind the vessel and then breaking out to the other side and going along the vessel ahead completing the maneuver by returning to the channel ahead of the beset vessel.

Cutting free beset vessel, Hi = 0.61 m, one maneuver

5.1.8 ICE TEST REPORT

Background of the test series, main objectives and other pertinent general information

Description of the models

Short description of the test methods

Description of the performed tests

Tables and charts:

o Plots and charts of the model-scale results and full-scale predictions o Full-scale predictions of resistance and powering in level ice and brash ice o Complete test program o Time histories of the measurements from the tests, results and full-scale prediction o Model drawings

5.2 OPEN WATER TESTS (SEPARATELY PRICED OPTION)

5.2.1 RESISTANCE AND PROPULSION TESTS

5.2.2 OPEN WATER TEST REPORT

Background of the test series, objectives and other pertinent general information

Description of methods and performed tests

Full-scale predictions of resistance and powering, EHP and SHP

Description of results for bollard pull tests

Plots of bow and stern rise and sinkage versus speed as well as trim as a function of ship speed; Fn and speed-length ratio for each displacement

Recommendation and Conclusions

Appendices:

Digital photos of complete test program (all tests and angles recorded)

6. (OPTIONAL) TASK 3 SCOPE OF WORK: 250 FT ICEBREAKER, TRIPLE SCREW WITH ONE BOW

UNIT (HULL B1)

6.1 ICE TESTS

6.1.1 STANDARD TEST PLAN DEVELOPMENT AND INSTRUMENT CALIBRATION

Prior to starting model design, construction or test preparations, the Contractor shall prepare a Test Plan that defines the

1. Detailed project schedule

2. Model construction plan, description of model, description and drawings of selected stock propellers

4. Methodology and procedures used to ensure target power is correctly scaled and repeatable

5. Methodology and procedures used to ensure the model coating/paint provides the target model-ice coefficient of friction

7. Identify the data analysis available at the end of each test run as a quick-look to assess the validity of each run and quality of data collected

8. Description of ice property measurement techniques and typical ice properties for the range of thicknesses proposed including flexural strength, crushing strength, and elastic modulus

9. Correlation data for models previously tested at same facility versus full-scale trials

10. Plan for video and still photography, including underwater video

11. Documentation of setups and tests

A draft Test Plan shall be delivered to the USCG for review and approval in the Contractor’s standard format. A final

6.1.2 MODEL ICE

The model ice material shall be selected by the test facility and reflect fresh water first year ice flexural strength of 760 kPa o Ice thickness o Flexural strength o Young’s modulus in bending o Crushing strength

6.1.3 MODEL

Model scale selection is based on the test facility’s available range of model scale ice thickness and mechanical properties as well as available stock propeller diameter. If no stock propeller of suitable diameter is available it can be manufactured to the desirable model scale. Model scale shall be no less than 1:18 and selected to align with the basin’s capabilities. Model shall be equipped with azimuthing podded propulsion. The surface of the model for ice tests shall be treated to achieve correct friction coefficient between the model and ice to correspond to a new painted (INERTA 160 or similar ice resistant coating) surface in full scale.

Table 3. Principal Characteristics, Hull B1

Ship scale

Length overall 250 ft. 76.2 m

Length between perpendiculars 236.6 ft. 71.6 m

Beam 58.1 ft. 17.7 m

Design draft 14.5 ft. 4.4 m

Propeller diameter 8.55 ft. 2.6 m

Propulsion 3x ICE 1250 AZIPODS or

Shaft power 3x 2950 shp 3x 2200 kW

Figure 3. Hull B1. Conceptual

6.1.4 TOWED PROPULSION TEST (OPTIONAL AS PER FACILITY PRACTICE)

Level ice, Hi = 0.61 m, one speed astern (3 knots)

Level ice, Hi = 0.91 m, three speeds ahead (2, 3 and 4 knots)

Level ice, Hi = 0.91 m, one speed astern (3 knots)

Brash ice, Hi = 1.22 m, three speeds ahead (4, 7 and 10 knots)

Brash ice, Hi = 1.22 m, one speed astern (5 knots)

6.1.5 SELF- PROPULSION TESTS

Thrust of Azimuth thrusters (if the propeller shaft has a downward angle, there will be a small correction, between the measured force and the propeller thrust)

Level ice, Hi = 0.61 m, three power levels (40, 70 and 100%) astern

Level ice, Hi = 0.91 m, three power levels (40, 70 and 100%) ahead

Level ice, Hi = 0.91 m, three power levels (40, 70 and 100%) astern

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) ahead

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) astern

6.1.6 MANEUVERING TESTS

Tests shall be performed as self-propulsion tests by a skilled operator provided by the test facility.

The following model specific measurements shall be taken using position of the model as a function of time; x(t), y(t):

Azimuthing propulsor angle [α]

Propeller thrust [T]

Propeller torque [Q]

Turning on the spot in level ice, Hi = 0.61 m, power level 100 % (optional)

Crabbing tests. Level ice, Hi = 0.61m

The ability to make a wider channel by positioning the model at an angle (port side or starboard side) relative to the direction of transit. The model will use at least two headings (tentatively 10 deg and 20 deg) relative to the true heading.

Exact crabbing angles will be determined during the test. The test results shall show the track width and maximum angle at which continuous speed of 2-3 knot can be achieved.

Crabbing, Hi = 0.61 m (transit with ship heading deviating from transit heading) at power level 100% ahead

Crabbing, Hi = 0.61 m (transit with ship heading deviating from transit heading) at power level 100% astern

Crabbing tests. Brash ice, Hi = 2.44 m

Exact crabbing angles will be determined during the test. The test results shall show the track width and maximum angle at which continuous speed of 2-3 knot can be achieved.

Crabbing in brash ice, Hi = 2.44 m (transit with ship heading deviating from transit heading) at power level 100% ahead

Crabbing in brash, Hi = 2.44 m (transit with ship heading deviating from transit heading) at power level 100% astern

Breaking out of the track, own channel, Hi = 0.91 m, P/S ahead, speed ~5 knots

6.1.7 OPERATIONAL TEST

6.1.8 ICE TEST REPORT

Background of the test series, main objectives and other pertinent general information

Description of the models o Full-scale predictions of resistance and powering in level ice and brash ice.

o Complete test program o Time histories of the measurements from the tests, results and full-scale prediction o Model drawings

6.2 OPEN WATER TESTS (SEPARATELY PRICED OPTION)

6.2.1 RESISTANCE AND PROPULSION TESTS

6.2.2 OPEN WATER TEST REPORT

Description of methods and performed tests

Full-scale predictions of resistance and powering, EHP and SHP

Description of results for bollard pull tests

Plots of bow and stern rise and sinkage versus speed as well as trim as a function of ship speed; Fn and speed-length ratio for each displacement

Recommendation and Conclusions

Appendices:

7. (OPTIONAL) TASK 4 SCOPE OF WORK: 250 FT ICEBREAKER, TWIN SCREW (HULL B2)

7.1 ICE TESTS

7.1.1 STANDARD TEST PLAN DEVELOPMENT AND INSTRUMENT CALIBRATION

Prior to starting model design, construction or test preparations, the Contractor shall prepare a Test Plan that defines the following items:

1. Detailed project schedule

2. Model construction plan, description of model, description and drawings of selected stock propellers

4. Methodology and procedures used to ensure target power is correctly scaled and repeatable

5. Methodology and procedures used to ensure the model coating/paint provides the target model-ice coefficient of friction

7. Identify the data analysis available at the end of each test run as a quick-look to assess the validity of each run and quality of data collected

8. Description of ice property measurement techniques and typical ice properties for the range of thicknesses proposed including flexural strength, crushing strength, and elastic modulus

9. Correlation data for models previously tested at same facility versus full-scale trials

10. Plan for video and still photography, including underwater video

11. Documentation of setups and tests

A draft Test Plan shall be delivered to the USCG for review and approval in the Contractor’s standard format. A final

7.1.2 MODEL ICE

The model ice material shall be selected by the test facility, and reflect fresh water first year ice flexural strength of 760 kPa o Ice thickness o Flexural strength o Young’s modulus in bending o Crushing strength

7.1.3 MODEL

Table 4. Principal Characteristics, Hull B2

Ship scale

Length overall 250 ft. 76.2 m

Length between perpendiculars 236.6 ft. 71.6 m

Beam 58.1 ft. 17.7 m

Design draft 14.5 ft. 4.4 m

Propeller diameter 8.55 ft. 2.6 m

Propulsion 2x ICE 1400 AZIPODS or

Shaft power 2x 4700 shp 2x 3500 kW

Figure 4. Hull B2. Conceptual

7.1.4 TOWED PROPULSION TEST (OPTIONAL AS PER FACILITY PRACTICE)

Level ice, Hi = 0.61 m, one speed astern (3 knots)

Level ice, Hi = 0.91 m, three speeds ahead (2, 3 and 4 knots)

Level ice, Hi = 0.91 m, one speed astern (3 knots)

Brash ice, Hi = 1.22 m, three speeds ahead (4, 7 and 10 knots)

Brash ice, Hi = 1.22 m, one speed astern (5 knots)

7.1.5 SELF- PROPULSION TESTS

Thrust of Azimuth thrusters (if the propeller shaft has a downward angle, there will be a small correction, between the measured force and the propeller thrust)

Level ice, Hi = 0.61 m, three power levels (40, 70 and 100%) astern

Level ice, Hi = 0.91 m, three power levels (40, 70 and 100%) ahead

Level ice, Hi = 0.91 m, three power levels (40, 70 and 100%) astern

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) ahead

Brash ice, Hi = 1.22 m, three power levels (40, 70 and 100%) astern

7.1.6 MANEUVERING TESTS

Tests shall be performed as self-propulsion tests by a skilled operator provided by the test facility.

The following model specific measurements shall be taken using position of the model as a function of time; x(t), y(t):

Azimuthing propulsor angle [α]

Propeller thrust [T]

Propeller torque [Q]

Breaking out of the track - One track will be made by the ship into selected side of the model ice sheet. Tests shall be conducted ahead and astern, by breaking out of the channel and achieving at least a 90 degree turn to completely enter the ice sheet. The track may have some ice floes in it. In the test, a model will first advance along the track to the agreed speed. Then the azimuthing propulsors are turned and the track of the model is recorded. The test is terminated when the model achieves at least a 90 degree turn and whole model is in level ice or when the ice sheet area allocated for the test is used. A similar test will be made when the model is moving astern. Tests shall be performed both turning to port and turning to starboard.

Star maneuver - One star maneuver shall be made. An appropriately wide area of the ice sheet is allocated for each test.

The target width of the turning space is 300 FT in full scale. The time needed for the maneuver and the ship position and orientation angle will be recorded.

Breaking out of the track, own channel, Hi = 0.91 m, P/S ahead, speed ~5 knots

7.1.7 OPERATIONAL TEST

Cutting free beset vessel – After the level ice run is completed the object simulating beset vessel of approximately 30 m wide will be placed in the middle of the broken channel and a cutting free maneuver will be performed by breaking out of the channel astern and going along the vessel, returning into the channel behind the vessel and then breaking out to the other side and going along the vessel ahead completing the maneuver by returning to the channel ahead of the beset vessel

7.1.8 ICE TEST REPORT

Background of the test series, main objectives and other pertinent general information o Full-scale predictions of resistance and powering in level ice and brash ice.

o Complete test program o Time histories of the measurements from the tests, results and full-scale prediction o Model drawings

7.2 OPEN WATER TESTS (SEPARATELY PRICED OPTION)

7.2.1 RESISTANCE AND PROPULSION TESTS

7.2.2 OPEN WATER TEST REPORT

Description of methods and performed tests

Full-scale predictions of resistance and powering, EHP and SHP

Description of results for bollard pull tests

Plots of bow and stern rise and sinkage versus speed as well as trim as a function of ship speed; Fn and speed-length ratio for each displacement

Recommendation and Conclusions

Appendices:

8 PERIOD OF PERFORMANCE

The period of performance of services is eighteen (18) months from the date of award.

9 DELIVERABLES and SCHEDULE

All deliverables shall be electronic, no paper copies required.

ITEM DESCRIPTION QTY DUE DATE

1 Draft Test Plan 1 15 days after award of Task Order

2 Final Test Plan 1 30 days after award of Task Order

3 Draft Model Test Report 1 60 days after completion of tests in

Task Order

4 Final Model Test Report 1 90 days after completion of tests in

Task Order

10 GOVERNMENT FURNISHED PROPERTY

None.

11. GOVERNMENT PROVIDED DATA/INFORMATION

The following data and information for each Hull alternative will be provided after contract award:

2D Lines Drawings

3D Hull Models

Principal Characteristics

Final Draft and Trim Conditions

Centers of Gravity

Propeller Characteristics

12. QUALITY ASSURANCE

The Contractor shall apply and ensure internal quality control procedures are present throughout performance. The USCG may attend the model tests to observe and act as the Contracting Officer’s Representative. The Contractor notify the

Government 60 days prior to the start of each testing program so that the Government may plan travel and witness the tests.

The Contractor shall not proceed with model tests until test plan, including facilities, has been reviewed and approved by the

Government.

13. SECURITY CLEARANCE

Security clearances are not required for this project.

Section D—Packaging and Marking

D.1 Data Packaging Language

D.2 Markings of Data

D.1 Data Packaging Language

Any unclassified data to be shipped shall be prepared for shipment in accordance with commercial practices and in section D.2.

D.2 Markings of Data

All reports delivered by the Contractor to the Government under this contract shall prominently show the following on the cover of the report:

(1) Name and Business Address of the Contractor

(2) Contract Number

(3) CLIN No.

(4) Sponsor: Great Lakes Icebreaker (CG-9326GL) Program

United States Coast Guard

Washington, DC

Section E—Inspection and Acceptance

E.1 Inspection and Acceptance

Inspection and acceptance of all deliverables shall be under the terms of the clause in Section

I, 52.212-4 (a) – Contract Terms and Conditions – Commercial Products and Commercial

Services.

Section F—Deliveries or Performance

F.1 Clauses Incorporated In Full Text

F.2 Place of Performance

F.1 Clauses Incorporated in Full Text

FAR 52.217-9—OPTION TO EXTEND THE TERM OF THE CONTRACT (MAR 2000)

(a) This contract does not contain option periods but contains priced optional tasks in section B.

The action to exercise any of the optional tasks will extend the total term of the contract. The

Government may extend the term of this contract by written notice to the Contractor within five days; provided that the…

This is the start of the file's text. The full file is on GovTribe.

File details come from the government source that posted it. Updated Oct 12, 2022.