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. 2021 Feb 14;21(4):1357. doi: 10.3390/s21041357

Table 2.

Calculated parameters of propulsion system, based on the operating parameters recorded during passenger vessel sailing with ON and OFF ALS.

Probe No. ALS State ALS Power
Consumption
1 Propeller Power
Distribution
2 Fuel
Consumption Difference
Fuel
Consumption
Difference
3 Propeller Power
Difference
4 Summary Propulsion Power
Difference
5 Average Speed
Difference
- - [MW] [%] [kg/h] [%] [MW] [MW] [kn]
- - A B C D E F G
6 off 69%
7 on 0.47 68% 97 0,8 0.3 −0.17 0.3
9 on 0.51 66% −0.31
10 off 69% −107 -0.9 −0.3 −0.30 0.1
16 off 71% −1.30
17 on 0.47 70% 125 1.0 0,7 0.23 0.1
19 on 0.51 69% −0.51
20 off 70% −68 -0.6 −0.1 −0.10 −0.2
22 off 71% 0 1.0 1.00
23 on 0.51 68% 75 0,6 0.5 −0.01 −0.1
24 on 0,51 69% −0.71
25 off 69% 299 2.4 −0.6 −0.60 0.0
26 off 78% −2.10
27 on 0.35 77% 237 1.7 −0.3 −0.65 −0.4
28 off 72% −0.10
29 on 0.48 69% 20 0.2 0.8 0.32 −0.4
30 on 71% −101 −0.8 −0.2 −0.20 0.0
31 on 0.63 69% 146 1.2 0.6 −0.03 −0.1
32 off 68% −95 −0.8 0.3 0.30 −0.1
33 off 71% −0.60
34 on 0.46 69% 189 1.5 0.0 −0.46 0.0
37 on 0.46 68% −0.36
38 off 70% −102 −0.8 −0.3 −0.30 −0.1

1 Propeller Power distribution-the part of total power produced on the vessel used for propulsion purposes. 2 Fuel consumption difference-difference of fuel consumption when ALS is ON or OFF. 3 Propeller Power difference-difference of propeller power consumption before and after start ALS. 4 Summary Propulsion Power difference-difference of propulsion purpose power consumption before and after start ALS. 5 Average speed difference-difference of ship speed before and after start ALS.