Connect Ports to Sea Network

Existing port ↔ node links (10)

ID	Port	Sea node	Distance (NM)
10	Busan	PUS_AP — Busan Approach	8.46
3	Chennai	MAA_AP — Chennai Approach	14.30
5	Colombo	CMB_AP — Colombo Approach	16.57
7	Jebel Ali	JEA_AP — Jebel Ali Approach	8.83
4	Kochi	COK_AP — Kochi Approach	17.67
1	Mumbai	MUM_AP — Mumbai Approach	21.83
2	Mundra	MUN_AP — Mundra Approach	26.55
8	Rotterdam	RTM_AP — Rotterdam Approach	9.14
9	Shanghai	SHA_AP — Shanghai Approach	38.13
6	Singapore	SIN_AP — Singapore Approach	8.52