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
The Windward Islands and the Leeward Islands are part of the Lesser Antilles of the Caribbean Sea. The Windward Islands are southeastern islands of the Caribbean. Theyâre called the Windward Islands because theyâre exposed to the wind (âwindwardâ) of the northeast trade winds (northeasterlies). Martinique.
Keel - The spine of a ship that runs from bow to stern at the lowest point. Lee (Leeward) - Direction the wind is blowing relative to the ship. The side of the ship opposite that of which the wind is coming from is known as the Lee side. Lighthouse - A tower used as an aid to navigation marking a hazard or point of entrance. Usually consisting of a very bright light atop a tower and often a foghorn or siren and radio beacon.