For those lucky enough to own an ex RNLI IB1 D-Class complete with its pod. These parts are not normally with the pod when they are sold as the RNLI wisely reuse and recycle these. 

I am having a small batch of these made as a one off. They are reverse engineered from an original and based upon this specification.

Fabricated from 316 Stainless steel, they will be supplied ready to use however will be unpainted.