ER stands for Extended Range These aircraft types that is identified by 'ER' are aircraft models that is enhanced for better efficiency at long range flights than its counterpart aircraft of the same model. Source(s): Aerospace Engineer - Aviation Enthusiast
Actually Dusty.... The leeward side extends all the way to Koko Head (encompasssing Pearl Harbor, Honolulu to Hawaii Kai). By definition. Windward is the side of an island where the predominant wind travels from the sea onto the island. Leeward is the side of an island where the predominant wind travels from the interior of the island to the sea. In practice on Oahu.
The windward side of the boat is the side of the boat that the wind is hitting. the other side of the boat that is sheltered from the wind is the Leeward side. In other words â¦... the windward side of the boat is the side that is closest to the source of the wind.