In marine insurance, what is a "club call"?

Solution 1:

This is covered extensively in a Wikipedia article entitled Protection and Indemnity Insurance - P&I Club.

The heart of the meaning of the phrase 'club call' is as follows :

a P&I Club member instead pays a "call". This is a sum of money that is put into the Club's pool, a kind of "kitty"

Also relevant is :

:Protection and indemnity insurance, more commonly known as "P&I" insurance, is a form of mutual maritime insurance provided by a P&I Club.1 Whereas a marine insurance company provides "hull and machinery" cover for shipowners, and cargo cover for cargo owners, a P&I Club provides cover for open-ended risks that traditional insurers are reluctant to insure.