Whitehaven have signed former Salford City Reds prop forward Matthew Haggerty for the 2012 Championship One campaign.
Haggerty spent time on trial at the Recreation Ground last season, scoring one try in six appearances.
The front-row never made a first-team appearance at The Willows but had been on reserve-grade terms since 2008.
Haven have also signed Ben Karalius from St Helens, Chris Fleming from Warrington, David Houghton from Widnes and Sammy Gee from London Skolars.
In addition, Luke Isakka, Andrew Beattie, Lee Doran, Scott McAvoy and Martyn Wilson have extended contracts with the Marras.