I see there are lot of downvotes for this comment, but it is not a dumb question at all. When situation is "near shored, small boat and navigate using lighthou

I see there are lot of downvotes for this comment, but it is not a dumb question at all. When situation is "near shored, small boat and navigate using lighthouses" then I would say smartphone would be better choice than relaying on lighthouses (light range 10+ nautical miles). There are a lot of other navigational aids usually close to shore (floating or on ground). Even tall mobile antenna towers or wind generators are more common than classical lighthouses.