Table 9.

Statistical analysis data for the 36 capability indicators under the three subsystems.

	Capability Indicators	Characteristic Value ${\mathit{q}}_{\mathit{y}}$	Improved Characteristic Value ${\mathit{e}}_{\mathit{y}}$	Loss Factor ${\mathit{\omega }}_{\mathit{y}}$	Entropy of Capability ${\mathit{I}}_{\mathit{y}}$	Subsystem Effectiveness ${\mathit{E}}_{\mathit{j}}$	Informatization Degree ${\mathit{f}}_{\mathit{j}}\left(\mathit{t}\right)$	Route Safety Factor $\mathit{\theta }$	System Effectiveness ${\mathit{E}}_{\mathit{t}\mathit{o}\mathit{t}\mathit{a}\mathit{l}}$
physical defence	Anti-piracy capability	0.8000	1.288	1.92%	0.0248	0.9421	39%	0.96	0.8485
	Mobile firefighting capability	0.4705	0.299	3.85%	0.0115
	Closed space gas detection capability	0.8333	1.493	5.77%	0.0862
	Video collection capability	0.7680	1.122	7.70%	0.0864
	Bilge emergency pump discharge capability	0.7147	0.896	9.62%	0.0862
	Safety warning capability	1.0000	2.000	11.54%	0.2309
	Safe operation support capability	1.0000	2.000	13.47%	0.2694
	Fuel safety protection capability	0.9333	2.528	15.39%	0.3891
	Personal protective equipment configuration capability	1.0000	2.000	17.32%	0.3463
	Fixed fire extinguishing capability	0.5457	0.431	1.92%	0.0083
	Ship self-rescue capability	0.7680	1.122	1.92%	0.0216
	Fire isolation capability	0.8000	1.288	3.85%	0.0495
	Water inlet alarm capability	0.5514	0.442	5.77%	0.0255
technical defence	Ship’s automatic navigation capability	0.6267	0.617	6.25%	0.0386	0.8294	27%
	Bridge information monitoring capability	0.6618	0.717	7.81%	0.0560
	Radar monitoring capability	0.6333	0.635	9.38%	0.0596
	Emergency communication capability	0.7467	1.025	10.94%	0.1121
	Automatic collision avoidance capability	0.4267	0.237	12.50%	0.0297
	Meteorological monitoring capability	0.5973	0.5434	14.06%	0.0764
	Fault tolerance of risk alarm system	0.8360	1.5111	15.63%	0.2361
	Network protection capability	0.8000	1.2876	1.56%	0.0201
	Video surveillance coverage capability	1.0000	2.0000	3.13%	0.0625
	Unsafe behaviour recognition capability	0.8360	1.5111	4.69%	0.0708
	Ship–shore cooperative monitoring capability	0.8100	1.3452	6.25%	0.0841
	Ship’s automatic navigation capability	0.1960	0.0428	7.81%	0.0033
human defence	Basic personnel support capability	1.0000	2.0000	8.86%	0.1772	0.8604	34%
	Familiarity of decision-makers with ships	0.1851	0.0379	10.34%	0.0039
	Risk mitigation Exercise situation	0.4642	0.2897	11.82%	0.0342
	Working language on board	0.3698	0.1707	13.29%	0.0227
	Crew safety training	0.4949	0.3381	1.48%	0.0050
	Crew handover situation	0.7200	0.9165	2.95%	0.0271
	Implementation of pre-shift meeting system	0.8000	1.2876	4.43%	0.0570
	Discussion on on-board safety risk events	0.8000	1.2876	5.91%	0.0761
	Health status of on-board personnel	0.8000	1.2876	7.38%	0.0951
	Operation conditions on board	0.2880	0.0978	8.86%	0.0087
	Stability of personnel on board	0.5333	0.4065	23.63%	0.0961