Appendix D. Sensitivity analysis results
D.2. Sensitivity analysis results for the internal factors
Figure 108 – Relative sensitivity to the internal factors for the collision scenario during the waterway navigation considering no pilot onboard
Figure 109 – Relative sensitivity to the internal factors for the collision scenario during the waterway navigation considering one pilot onboard
Figure 110 – Relative sensitivity to the internal factors for the collision scenario during the waterway navigation considering two pilots onboard
17% 62%
6%
5%
4% 3% 2% 1%
Captain: Training and experience Helmsman: Training and experience Captain: Attitude Captain: Perceived situation Helmsman: Attitude Helmsman: Perceived situation Captain: Time pressure Helmsman: Time pressure
84%
4%
4%4%2%1% 1%
1st pilot: Training and experience Captain: Training and experience 1st pilot: Attitude 1st pilot: Perceived situation Helmsman: Training and experience Captain: Attitude
1st pilot: Time pressure
67%
18%
4% 3%
3% 3% 1% 1%
1st pilot: Training and experience 2nd pilot: Training and experience 2nd pilot: Attitude 1st pilot: Attitude
1st pilot: Perceived situation 2nd pilot: Perceived situation 1st pilot: Time pressure Captain: Training and experience
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Figure 111 – Relative sensitivity to the internal factors for the collision scenario during the terminal approaching & berthing/unberthing & terminal departure
considering no pilot onboard
Figure 112 – Relative sensitivity to the internal factors for the collision scenario during the terminal approaching & berthing/unberthing & terminal departure
considering one pilot onboard
Figure 113 – Relative sensitivity to the internal factors for the collision scenario during the terminal approaching & berthing/unberthing & terminal departure
considering two pilots onboard
Captain: Training and experience Helmsman: Training and experience Captain: Attitude Captain: Perceived situation Helmsman: Attitude Helmsman: Perceived situation Captain: Time pressure Helmsman: Time pressure
86%
4%4%3% 1% 1% 1%
1st pilot: Training and experience 1st pilot: Attitude
1st pilot: Perceived situation Captain: Training and experience Captain: Attitude 1st pilot: Time pressure
Helmsman: Training and experience
68%
18%
4%
3% 3% 3% 1%
1st pilot: Training and experience 2nd pilot: Training and experience 2nd pilot: Attitude 1st pilot: Attitude
1st pilot: Perceived situation 2nd pilot: Perceived situation 1st pilot: Time pressure
Analysis of the human factor contribution to the risk of navigation in restricted waters
142
Figure 114 – Relative sensitivity to the internal factors for the contact/grounding scenario during the waterway navigation considering no pilot onboard
Figure 115 – Relative sensitivity to the internal factors for the contact/grounding scenario during the waterway navigation considering one pilot onboard
Figure 116 – Relative sensitivity to the internal factors for the contact/grounding scenario during the waterway navigation considering two pilots onboard
17% 61%
6%
5% 4%
3% 2% 1% 1%
Captain: Training and experience Helmsman: Training and experience Captain: Attitude Captain: Perceived situation Helmsman: Attitude Helmsman: Perceived situation Captain: Time pressure Helmsman: Time pressure Captain: Mental resources
1st pilot: Training and experience Captain: Training and experience Helmsman: Training and experience Captain: Attitude
1st pilot: Perceived situation 1st pilot: Attitude Captain: Perceived situation Helmsman: Attitude Helmsman: Perceived situation Captain: Time pressure 1st pilot: Time pressure 1st pilot: Mental resources
40%
1st pilot: Training and experience 2nd pilot: Training and experience Captain: Training and experience 2nd pilot: Attitude
1st pilot: Perceived situation 2nd pilot: Perceived situation 1st pilot: Attitude Helmsman: Training and experience Captain: Attitude 2nd pilot: Time pressure
1st pilot: Time pressure Captain: Perceived situation
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Figure 117 – Relative sensitivity to the internal factors for the contact/grounding scenario during the terminal approaching & berthing/unberthing & terminal departure
considering no pilot onboard
Figure 118 – Relative sensitivity to the internal factors for the contact/grounding scenario during the terminal approaching & berthing/unberthing & terminal departure
considering one pilot onboard
Figure 119 – Relative sensitivity to the internal factors for the contact/grounding scenario during the terminal approaching & berthing/unberthing & terminal departure
considering two pilots onboard
Captain: Training and experience Helmsman: Training and experience Captain: Attitude Captain: Perceived situation Helmsman: Attitude Helmsman: Perceived situation Captain: Time pressure Helmsman: Time pressure Captain: Mental resources
1st pilot: Training and experience Captain: Training and experience Captain: Attitude Helmsman: Training and experience 1st pilot: Perceived situation 1st pilot: Attitude
Captain: Perceived situation Helmsman: Attitude
Captain: Time pressure Helmsman: Perceived situation 1st pilot: Time pressure 1st pilot: Mental resources
40%
1st pilot: Training and experience 2nd pilot: Training and experience 2nd pilot: Attitude Captain: Training and experience 1st pilot: Perceived situation 2nd pilot: Perceived situation 1st pilot: Attitude Captain: Attitude
Helmsman: Training and experience 2nd pilot: Time pressure 1st pilot: Time pressure
Analysis of the human factor contribution to the risk of navigation in restricted waters
144 D.3. Sensitivity analysis to the MOFs
Figure 120 – Relative sensitivity to the MOFs for the collision scenario during the waterway navigation considering no pilot onboard
Figure 121 – Relative sensitivity to the MOFs for the collision scenario during the waterway navigation considering one pilot onboard
Figure 122 – Relative sensitivity to the MOFs for the collision scenario during the waterway navigation considering two pilots onboard
53%
47% Ship owner: Safety culture Ship owner: Training
47%
46%
4% 3%
Local pilotage: Safety culture Local pilotage: Training
Ship owner: Safety culture Ship owner: Training
49% 50%
1%
Local pilotage: Safety culture Local pilotage: Training
Ship owner: Safety culture
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Figure 123 – Relative sensitivity to the MOFs for the collision scenario during the terminal approaching & berthing/unberthing & terminal departure considering no pilot
onboard
Figure 124 – Relative sensitivity to the MOFs for the collision scenario during the terminal approaching & berthing/unberthing & terminal departure considering one
pilot onboard
Figure 125 – Relative sensitivity to the MOFs for the collision scenario during the terminal approaching & berthing/unberthing & terminal departure considering two
pilots onboard
53%
47% Ship owner: Safety culture Ship owner: Training
49%
47%
2% 2%
Local pilotage: Safety culture Local pilotage: Training
Ship owner: Safety culture Ship owner: Training
49% 50%
1%
Local pilotage: Safety culture Local pilotage: Training
Ship owner: Safety culture
Analysis of the human factor contribution to the risk of navigation in restricted waters
146
Figure 126 – Relative sensitivity to the MOFs for the contact/grounding scenario during the waterway navigation considering no pilot onboard
Figure 127 – Relative sensitivity to the MOFs for the contact/grounding scenario during the waterway navigation considering one pilot onboard
Figure 128 – Relative sensitivity to the MOFs for the contact/grounding scenario during the waterway navigation considering two pilots onboard
53%
47% Ship owner: Safety culture Ship owner: Training
35%
32%
18%
15%
Local pilotage: Safety culture Local pilotage: Training
Ship owner: Safety culture Ship owner: Training
48%
41%
5%5%
1%
Local pilotage: Safety culture Local pilotage: Training Ship owner: Safety culture Ship owner: Training
Local pilotage: Commercial pressure
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Figure 129 – Relative sensitivity to the MOFs for the contact/grounding scenario during the terminal approaching & berthing/unberthing & terminal departure
considering no pilot onboard
Figure 130 – Relative sensitivity to the MOFs for the contact/grounding scenario during the terminal approaching & berthing/unberthing & terminal departure
considering one pilot onboard
Figure 131 – Relative sensitivity to the MOFs for the contact/grounding scenario during the terminal approaching & berthing/unberthing & terminal departure
considering two pilot onboard
Analysis of the human factor contribution to the risk of navigation in restricted waters
148