SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page4 SECTION1 SPEED TEST AND SHAFT-POWER MEASUREMENT

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1 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page4 SECTION1 SPEED TEST AND SHAFT-POWER MEASUREMENT 1.1 Test method and procedure According to ship sea trial programmes, speed test carries out at open sea, DGPS system to be adopted when testing. Wind speed, wind direction and data of water flow to be recorded as well when testing. ship s course, speed, test distance and test duration is recorded automatically by DGPS shipping measurement system.tests shall be made correspondence to the main engine output at different percent of MCR according to different vessel.meanwhile measuring the speed, measure and record the main engine output in kw and revolution in rpm. 1.2 Measuring Instruments 1.2.1Speed trial instrument: DGPS Survey System DELL D630 Computer The software for DGPS 1.2.2Shaft-power measurement instrument: Torsion-meter Torque Track 10K Personal daq/55 data acquisition system DELL D630 Computer The software for power measurment

2 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page5 1.3 Measured value of speed/shaft-power test at ballast load condition Test date: wind wind wind RUN NO. MCR 50%-1 MCR 50%-2 M.E rpm Start time 16:46 17:02 Distance (m) Track Heading ( ) Duration(s) Speed(kn) Shaft power (kw) Speed(kn) 7 36 Direction ( ) P/120 S/10 Mean Power (kw) 3247 Mean Speed(kn) RUN NO. MCR 75%-1 MCR 75%-2 M.E rpm Start time 17:14 17:31 Distance (m) Track Heading ( ) Duration(s) Speed(kn) Shaft power (kw) Speed(kn) 37 9 Direction ( ) S/10 P/120 Mean Power (kw) 4756 Mean Speed(kn) RUN NO. MCR 90%-1 MCR 90%-2 M.E rpm Start time 17:40 17:59 Distance (m) Track Heading ( ) Duration(s) Speed(kn) Shaft power (kw) Speed(kn) 9 42 Direction ( ) P/120 S/10 Mean Power (kw) 5572 Mean Speed(kn) 14.73

3 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page6 RUN NO. MCR 100%-1 MCR 100%-2 M.E rpm Start time 18:12 18:58 Distance (m) Track Heading ( ) Duration(s) Speed(kn) Shaft power (kw) wind Speed(kn) Direction ( ) S/10 P/120 Mean Power (kw) 6505 Mean Speed(kn) Note: 1- Ship speed is indicated as Mean SPEED on the table and is the speed relative to the ground. The time interval between each run should be as short as possible in order to minimize any variations of tide and wind influence. Mean speed=(v1+v2)/2 2- The details of speed trial measurement can be seen <Appendix 1. Details of speed test and shaft-power measurement>. 3- The details of shaft-power measurement can be seen <Appendix 1. Details of speed test and shaft-power measurement>. shaft power (kw) Shaft Power vs Ship Speed Curve (Speed trial) ship speed (kn)

4 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page7 1.4 Analysis and corrections for speed trial. (Base on BSRA standard method of analyzing speed trial result) It is recommended that the sea trial, especially for the speed trial, should be corrected to the fair weather and smooth sea condition. However, this speed trial for ADFINES NORTH met awful sea condition that the wind beaufort scale up to 6 and the wave dauglass scale up to 5. Therefore, in order to correct such condition to a fair weather (no wind), a number of method will be studied for evaluating the resistance of wind and sea condition. In this report, the corrections include: 1) True wind estimation 2) Wind analysis 3) Summary of correction Symbols: L PP = 183m, length between perpendiculars L W = 186m, waterline length L OA = 189.9m, length overall B = 28.5m, breadth T = 10.4m, draught design T B = 4.085m/6.239m, draught ballast = 45662m 3, volume, moulded S = 7943m 2, wetted surface area, bare hull AV = 438.6m2, windage area C Air density factor=5.838[ (t 0 )] /P α C AA1 Corrected ahead wind resistance coefficient= C AA Φ 1 Φ 2 C AA Ahead wind resistance coefficient = R AA /(0.5ρA V V 2 RW ) γ R Relative Wind direction, degree P EW Wind and air effective power, kw=r AA V 1 G P 0 No wind shaft power, kw=p S -P SW P S Measured shaft power, kw P SW Wind and air shaft power, kw= P EW /η D R AA 2 Wind and air resistance, N= A V /C C AA1 V RW V G Ground speed, knots V RW Relative Wind speed, knots V TW True wind speed, knots η D Quasi-propulsive coefficient Φ 1 Ahead wind resistance coefficient correction factor for boundary layer velocity variations Φ 2 Ahead wind resistance coefficient correction factor for difference between height of anemometer and free stream height ρ Mass density of air, kg/m 3

5 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page8 True wind estimation First, to calculate the wind resistance includes the preparation of the diagram for wind analysis is to estimate the true wind resistance from relative wind by cosine theorem and Pythagorean proposition. Each run of the speed test should be calculated. It rests with the relative wind speed and direction, for each run, on an abscissa of ship speed over the ground as illustrated below. RELATIVE WIND DIRECTION Wind analysis (Correct to no wind) Wind resistance and wind power are obtained from the formulas below: Wind and air resistance Wind and air effective power Wind and air shaft power No wind shaft power R AA = A V /C C AA1 V 2 RW, (N) P EW = R AA V G , (KW) P SW = P EW /η D, (KW) P 0 = P S - P SW According to the calculation, we can get the table below for wind analysis. VG VRW γr GROUND SPEED Ps (kw NORTH RUN GROUND SPEED SOUTH RUN VG/VRW (VRW)2 CAA Φ1*Φ2 CAA1 ηd RAA(N) P0(kW) RELATIVE WIND DIRECTION

6 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page9 Ship's Speed-Power Curve 8000 Sea Trial Curve Corrected Curve(no wind) 7000 Shaft Power (kw) P db = /1.15=5337kW 14.73Kn Ground Speed (kn)

7 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page Ship speed estimation at design load condition The ship model test was performed at MD=10.4m/10.4m (design load) and MB=4.085m/6.239m (ballast load). The sea trial is only performed at TB=4.3m/6.3m The speed requirement is to be calculated to the design draft condition (See curve TD ). The trial condition curve (TB) will be used for the calculation below and the estimation speed-power curve for design load (TD), ballast load (TB ) are plotted on next page. Ship speed estimation at design draft condition According to the measurement, the curve of speed and shaft-power at ballast load condition already been got. So, Ship s speed at design load can be obtained from the following formula: P TD = P TB * P MD / P MB In the formula: P actual shaft-power at ballast draft condition TB P estimation shaft-power at design draft condition TD P model test shaft-power at ballast draft condition MB P MD model test shaft-power at design draft condition Note: We can obtain the P MB and P MD from the model test report. P TB is the data from actually measurment. The sea trial draft is very closed to the ballast draft of model test, so the error of displacement between sea trial and model test could be ignored. after calculating we can get the following data: Estimation at design load condition(ed): Speed(Kn) P TD P TB P MB P MD Conclusion of estimation of design load condition. Estimated shaft power and corresponding ship speed is: Estimated shaftpower: /1.15=5337 kw corresponding ship speed at ballast draft (4.3m/6.3m): kn. corresponding ship speed at design draft (10.4m/10.4m): kn.

8 SSK 37300DWT BULK CARRIER "ADFINES NORTH" Sea Trial Report 17/03/2012 Page11 SHAFT-POWER vs SPEED CURVE (Summary) 7000 (MB)Model ballast test (MD)Model design test Sea trial curve(no wind) Design Curve 6500 Shaft-Power (kw) P db = /1.15=5337kW 13.98kn 14.43kn Speed (kn)