The account moves from comms and digital marketing agency Publicasity after a three-way pitch.
The British Marine Federation represents more than 1,500 of the 4,200 companies within the UK leisure, superyacht and small commercial marine industry, accounting for over 70 per cent of the industry’s £2.9bn turnover.
Surname & Surname and Open Road’s first campaign will promote this year’s London Boat Show in January.
It is the first joint win for the two agencies and comes eight months after Open Road was acquired by Blue Rubicon, which launched consumer-focused Surname & Surname in March 2012.
Rebecca Jackson, PR & comms manager at the British Marine Federation, said: "We can see how each agency brings a unique set of skills while also being able to work in a fluid, collaborative way."
Suzi Williams, senior consultant at Surname & Surname, said the agencies would implement a targeted campaign to promote both the London and Southampton boat shows.
She added: "This will be carried out through a dedicated media relations programme that focuses on securing pre-event coverage to drive ticket sales as well as experiential engagement to secure editorial during the show itself."
The British Marine Federation joins group clients such as Coca-Cola, Argos, Homebase, Heathrow, St Pancras International and YPlan.
Graham McMillan, director at Open Road, said: "Our work with Surname & Surname will be incredibly diverse, covering everything from consumer PR for the boat shows to corporate PR for the BMF to public affairs on all of the UK and EU issues facing the leisure marine industry, and doing so in an integrated way."