Medfield, MA. March 21, 2011 – Comark Corporation, a leader in the design and manufacture of ruggedized computer solutions for the marine, military, and commercial markets, has received Type Approval on their 23” Series of MDU marine displays from the American Bureau of Shipping (ABS). Type Approval is given to marine display products that are designed and tested to meet IEC 60945, Maritime Navigation and Radio Communication Equipment and Systems, and can be consistently manufactured.