The term 'Large Sailing Ship' can be summarized by two crossword solutions: GALLEON (7 letters) and WINDJAMMER (10 letters). A GALLEON is a large, multi-decked sailing ship that was used mainly by European countries from the 16th to 18th centuries. It was typically used for military and trading purposes. A WINDJAMMER is a large, traditional sailing ship that was used mainly in the 19th and early 20th centuries for cargo transport. They were often used for long-distance voyages and were known for their great size and power.