Containerships Sailing Speed and Fleet Deployment Optimization under a Time-Based Differentiated Freight Rate Strategy

Table 5

Results obtained by the proposed optimization model under FFRS and TDFRS.

Freight rate strategy		Routes	Sailing speed (knots)						Number of containerships	Voyage time (hr)	Profit of each route (USD)	Total profit (USD)
			Leg 1	Leg 2	Leg 3	Leg 4	Leg 5	Leg 6
FFRS		1	19.8	19.9	20.0	19.7	19.9	—	5	840	10 949 979	49 934 590
		2	19.7	19.5	19.6	20.0	19.7	19.8	5	840	10 161 789
		3	18.0	19.5	19.2	18.0	18.0	—	5	803	11 209 699
		4	18.2	18.2	18.5	19.0	18.3	18.3	5	840	17 613 123
TDFRS		1	19.8	19.9	20.2	19.7	19.7	—	5	840	10 950 651	49 948 395
		2	19.7	19.5	19.6	20.7	19.7	19.0	5	840	10 162 840
		3	18.0	19.5	19.2	18.0	18.0	—	5	803	11 209 699
		4	18.2	18.2	18.5	19.8	18.3	19.3	5	811	17 625 205
		1	19.8	19.9	24.6	19.7	23.7	—	5	745	11 202 298	51 697 312
		2	19.7	19.5	19.6	23.4	19.7	21.8	5	777	10 271 035
		3	18.0	19.5	24.2	18.0	23.4	—	4	672	11 745 238
		4	18.2	18.2	18.5	25.6	18.3	25.0	4	671	18 478 741

Note. represents the optimal results.