November 20, 2019 FEATURE | Research vessel Petrel on a roll with historical shipwreck finds Written by Nelson E. Dela Cruz on November 20, 2019. Posted in Commercial Mariner - Featured, Commercial Mariner - Maritime Security, Maritime Archaeology, Ships (Naval), Work Boat World Features. Over the past several years, the research vessel Petrel team, and its unique technology, has been dedicated to finding and documenting historic shipwrecks with a focus on .. Read More