Welcome to Simple English Wikipedia. Unfortunately I reverted your good faith effort for the reason that it introduced incorrect information into the article. It's true that on p. 175 of your source it did describe them as "long narrow boats" but that could be said of many different types of boats. The Phoenician warships were plank on rib construction, had several tiers of oarsmen, and often had a sharp ram on the prow. The Longship (proper name not description) were a much lighter and shallower draft type of vessel. They used lapstrake construction. The longships were seagoing whereas the navis longa rarely were out of sight of land. If you're interested, doing a search comparing the two will net some very interesting information on the differences between the two. Good luck in your editing here. User:Rus793 (talk) 02:06, 3 March 2015 (UTC)