2016 RV Marcus G. Langseth (Secure) For more information on the upcoming and completed cruises, visit the Cruises page. View the R/V Marcus G. Langseth's currrent location. Archived Schedules Operating Vessel Calendar Year RV Marcus G. Lanseth 2015 | 2014 | 2013 | 2012 | 2011 | 2010 | 2009 | 2008 | 2007 ‹ R/V Marcus G. Langseth up Geodetic Parameters and Positioning ›