IPA: //ˈsiːbɔrn//
KK: /ˈsiːbɔrn/
Related to something that is carried or transported by the sea.
The seaborne trade has been vital for the economy of coastal cities.
Seaborne → It is formed from "sea" (from Old English "sǣ", meaning the ocean or large body of saltwater) and "borne" (from Old English "beran", meaning to carry). The word "seaborne" means carried by the sea or transported over the sea.
Think of something that is 'carried' ('borne') by the 'sea' — that's why seaborne refers to things transported over the ocean.