New High-Resolution Multi-beam Sonar used on Shipwreck Surveys New High-Resolution Multi-beam Sonar used on Shipwreck Surveys Lisa Woodruff2020-12-02T13:51:47+00:00 New High-Resolution Multi-beam Sonar used on Shipwreck SurveysLisa Woodruff2020-12-02T13:51:47+00:00