Bank signatories to the Poseidon Principles will soon number 23 and roughly 50% of all debt extended to shipping, a chief architect of the green-financing regime said on Tuesday.

The steady build-up of lenders committing to the initiative continues from the 20 last noted in December, when 15 signatories for the first time reported their portfolios' levels of compliance with decarbonisation targets, according to Michael Parker, chair of the Poseidon Principles Association.