As part of the agreement RB Jones will write marine liability, marine excess, brown-water hull and excess energy placements on behalf of the carrier.
Following the arrangement, which takes effect on 15 September, ProSight marine executive Mark Engel will become managing director at RB Jones. He is tasked with growing the entity's book of business.
In a statement ProSight said that despite the new partnership it will continue to insure marine risks as part of all-lines policies offered in other classes of business.
RB Jones is a managing general agent owned by insurance group HW Kaufman.
Commenting on the agreement Mark Engel said both ProSight and RB Jones were built on deep industry expertise and delivering specialized value and innovation to insurance brokers.
Kaufman Group senior vice president Jodie Kaufman Davis added that the partnership with ProSight would increase RB Jones’ commercial marine and energy expertise and expand the company’s overall footprint.