航行试验大纲.docx

1、航行试验大纲contentI SEA TRIAL OF HULL PARTI-1 GENERAL(1) All tests to be carried out when all systems and ancillaries have been completed and mooring tests have been done.(2) In general, zigzag-maneuver test, turning circle test, inertia test, crash stop ahead test, vibration test, noise measurement and

2、williamson turn test should be carried out only for first vessel, and the above mentioned tests should be omitted for second and subsequent ships (pending). I-2 Test Condition and PlaceThe vessel is to be ballasted to the ballast condition and following trials to be performed. Before Progressive Spe

3、ed Trial, the drafts (fore draft is 7.18m, aft draft is 9.18m(displacement about 80800m3) should be verified by the remote draft reading onboard, which is calibrated and confirmed by owner during the Inclining Experiment.The progressive speed trial to be carried out in calm sea, with small wind forc

4、e. If the wind force exceeds Beaufort scale 3, wind and shallow water correction should be applied according to BSRA method. I-3 Progressive Speed Trial (See Table H-1)(1) The progressive speed trial is to be carried out under the following five working conditions.SER. NO.M/E OUTPUTBHPM/E SPEED RUNS

5、150 max. cont. output8430 kW76r/min2275 max. cont. output12645 kW86r/min 2385 max. cont. output (NCR)14331 kW91r/min24Max. cont. output (MCR)16860 kW95r/min252920 kW49r/min1(2) Before speed trial the load adjustment according to loading requirements, draft gauge and measurement of seawater specific

6、gravity to be carried out.(3) The depth of water in sea trial area to be more than 80m. Except condition 5, Each speed trial is to consist of two consecutive runs along and against the tide over the same course and the speed, main engine rating and revolution shall be obtained as the mean value of t

7、he two consecutive runs at each condition as shown in the following formula:V=(V1+V2)/2, P=(P1+P2)/2, N=(N1+N2)/2Speed measure is to be carried out 1 nautical mile distance for each run. Before arriving at the speed-measuring area the vessel shall run a sufficient distance of abt.3 nautical miles in

8、 order that the main engine has run at stable outputs before the speed measurement commences. During speed measuring within test section course deviation shall be not more than 2 degrees, steering angle shall be not more than 5 degrees. (4) Speed-measuring methodThe trial speed is to be measured by

9、DGPS. The output shaft power and revolution of main engine to be measured by torsion meter. The instruments which used in the test should have the certification of verification before speed trials.(5) Measurement recorda. Test time and water depth of every trip.b. Wind velocity and direction, weathe

10、r condition.c. Ships speed, revolutions, power of M/E (rpm) and indicator horsepower of every trip.(6) Ships speed calculationShips speed at design draft (16.5m) to be obtained from the following formula: VTD = VTB * VMD / VMBin the formula:VTD actual speed at design draft.VTB actual speed at ballas

11、t draft.VMD model test speed at design draft in VMB model test speed at ballast draft.I-4 Inertia Test, Crash Stop Astern Test and Crash Stop Ahead Test (1) Inertia Test (Only H1008) (See Table H-2)When ship is going full ahead at normal rpm (86.2 r/min), give an order to stop main engine. When ship

12、s speed reduces to the speed abt. 5kn the test is finished. During the test the course heading should be kept by changing the rudder angle. Measure and record the distance and time from the order of stop M/E to the ships speed reduce to 5kn.(2) Crash stop astern test (See Table H-3)When ship is goin

13、g full ahead at normal rpm (86.2 r/min), give an order to make main engine run astern (63r/min). When ships speed reduces to the speed abt. 0kn the test is finished. During the test keep rudder angle at 0 degree. Measure and record the distance and time from command full astern to the ships speed re

14、duce to 0kn.(3) Crash stop ahead test (Only H1008) (See Table H-4)When ship is going astern with 63r/min of main engine, give an order to make main engine run ahead (86.2 r/min). When ships speed reduces to the speed abt. 0kn, the test is finished. During the test keep rudder angle at 0 degree. Meas

15、ure and record the distance and time from command full ahead to the ships speed reduce to about 0kn.I-5 Turning Circle Test(Only H1008) (See Table H-5)(1) Test methodWhen the steering gear is in the condition of double pump working, the test should be done at full speed (91r/min), harbor full speed

16、(68r/min)and harbor half speed (55r/min) respectively:a. The rudder angle is turned to hard starboard (35degree) and held until the ships heading angle changes to 540 degree, the test is finished.b. Resume the straight course until the speed recovery.c. The rudder angle is turned to hard portside (3

17、5degree) and held until the ships heading angle changes to 540 degree, the test is finished.d. Resume the straight course until the speed recovery.(2) Measurement record the transfer distance, advance distance, turning diameter and maximum heeling angle.I-6 Zigzag Maneuvering Test (See Table H-6)(1)

18、 Test methodWhen the vessel is running ahead (91r/min), the test is to be carried out in accordance with following steps:a. The rudder angle is turned from its zero position to 10 starboard and held until the course of the vessel changes to an angle of 10 starboard to the original course;b. The rudd

19、er angle is turned from 10 starboard to 10 port and held until the course of the vessel changes to an angle of 10 port to original course;c. The rudder angle is turned from 10 port to 10 starboard and held until the course of the vessel changes to an angle of 10 starboard to original course:d. The r

20、udder angle is turned from 10 starboard to its zero position and held until the vessel runs in original course.(2) Measurement recorda. M/E revolution.b. Initial vessel speed.c. Time of every stage and course angle.I-7 Course Keeping Test (See Table H-7)During sea trail, check the course stability:(

21、1) Keep the steering tiller unchanged while the vessel is sailing full ahead (91r/min) with steering by hand. Record the reading of GYROCOMPASS with the interval of 30 seconds. Measurement will be continued for 3 minutes, one time for fair and counter current respectively.(2) The vessel is sailing f

22、ull ahead (91r/min) and to be ensured to keep the course. Measure the times of steering for keeping the course and the max. Rudder angle. Measurement will be continued for 3 minutes, one time for fair and counter current respectively.I-8 Steering Gear Test (See Table H-8)(1) Main engine is controlle

23、d in wheelhouse, and maneuver handle to be put in the position of ahead and full speed (91r/min). Steering test to be done in wheelhouse. Operate the hydraulic pump No.1 or No.2 respectively, do the test by putting the rudder angle from 0 to 35 starboard/from 35 starboard to 35 port/form 35 port to

24、0 /from 0 to 35 port/from 35 port to 35 starboard/from 35 starboard to 0 . Measure ships heeling angle. The time required to put the rudder from 35 of one side to 30 of another side shall not exceed 28 second.(2) Main engine to be put on the status of ahead and full speed, running two hydraulic pump

25、s, test the capability of putting the rudder from 0 to 35 starboard/from 35 starboard to 35 port/form 35 port to 35 starboard/ from 35 starboard to 0 . Following data to be recordeda. Weather, sea condition.b. Time required for each moving rudder.c. Maximum oil pressure in hydraulic cylindersd. Maxi

26、mum current of motor.(3) Emergency steering gear test To test the emergency steering effectiveness in steering gear room with ships running at half speed (M/E abt 76r/min) but not less than 7Kn.By turning the pump control handle make the rudder angle changed from 0 - 15 starboard - 15 port - 0 one t

27、ime. Measure the time of steering from 15 starboard to 15 port. It should not exceed 60 second.(4) Auto pilot effectiveness testDuring the main engine endurance test, do the test with No.1&No2 steering system respectively.-NFU (manual) steering-HAND (following) steering-AUTO (automatic) steeringSet

28、up a heading course, navigate with auto pilot, and observe the keeping course capacity with course recorder. Then do the test of changing heading course.I-9 Windlass and Anchoring Test (See Table H-9)(1) An anchor-ground with more than 82.5 meter depth shall be selected under a calm sea condition an

29、d the bow in the upwind.(2) Each anchor is to be let go down gradually to the surface of the water.(3) Five shots of chains of one side anchor is to be let go down freely. During this process manually brake. Check the reliability of the brake system. (4) One side anchor is to be hoisted. During hois

30、ting process, average speed of hoisting anchor to be measured and recorded. (by measuring No.2 and No.3 shot of chain ) , The average speed is not less than 9m/min. Then hoist the anchor up to bell mouth with windlass.(5) Another anchor is to be tested in the same way as above.(6) Data to be recorde

31、dDate & place of test, weather, water depth, actual length of chain under water, maximum oil pressure and maximum working current of electric motor etc.(7) Two anchors to be hoisted at the same time with one shot of chain under water.I-10 Structrure testNo.ItemFrameVolumeTestRequirementAirWater1F.P.T.(C)2993214715.68*Overflow2A.P.T. (C)-5141303.57*Overflow3No.6 Hold (al.)13116022681.5*Full (Remark:The items that have not finished in mooring stage will be completed during sea trail.)I-11 Measurement of Vibration (See Table H-10)Measuring of vibration to be carried out during M/E Endura