The force that drives your boat is dazzling, and the boat requires well-engineered and well-maintained tensile strength in all elements of its rig to harness this force properly and safely.
A conventional sloop’s mast is customarily supported by six shrouds: two diagonal “lowers” that run from the deck’s edge to point where the first spreader meets the mast, port and starboard, and one on each side rising from the deck edge parallel to the mast to the same spreader’s tip, where it redirects to the masthead. Backstays, running or fixed, and forestays support the mast fore-and-aft. Applying proper tension to these sinews is complex marine engineering beyond our four-page scope; we’re merely touching on the immense forces your hull, mast, and standing rigging sustain.