Helicopter deck the submarine, but brushes the officer charged with trying to hook him who receives a minor injury. Coaxial rotor helicopters in flight are highly resistant to side-winds, which makes them suitable for shipboard use, even without a rope-pulley landing system. Marine and offshore helicopter decks on board offshore oil platforms and ships are typically regulated by the rules defined within CAP 437, which defines standards for the design, marking, and lighting of marine/offshore helicopter decks, and is produced by the Civil Aviation Authority. The largest marine heli decks will accommodate the Boeing CH-47 Chinook, which requires a D value of
Chinook Point was designated a National Historic Landmark in 1961. Chinook Point is a hilly promontory on the north bank of the Columbia River, roughly east of its actual mouth, which is marked on the north by Cape Disappointment and the south by Point Adams. The point is fortified with the remains of Fort Columbia, which include thirteen buildings erected in 1902, and three artillery emplacements installed between 1897 and 1900. The mouth of the Columbia River, the major river of the northwestern United States, was almost discovered several times before Captain Robert Gray spotted it in 1792. Spanish explorer Bruno de