1) Early american explorer 2) Explorer born around AD 970 3) Explorer Leif 4) Leif of mariners 5) Norse adventurer 6) Norse mariner Leif 7) Vinland explorer 8) Vinland man Found on https://www.crosswordclues.com/clue/ericson
==Summary== A diving regulator consisting of a diaphragm-type, DIN first stage with pressure gauge, demand valve and drysuit inflation direct feed ... Found on http://en.wikipedia.org/wiki/Ericson