There is a great deal of controversy over the use of subway cars as artificial reefs. There shouldn't be. Subway cars are fish condos. They are the perfect size and shape to provide homes for all sorts of fishes, as well as large attachment areas for other organisms. The fact that they come complete with large door and window openings is even better. Most reef materials, such as ships and barges, improve with age because they open up, allowing easier access to the interior. Indeed, some of the most barren reefs I have seen are those that are completely intact, since they offer little shelter.
Boilers are one of the most common shipwreck features, found on almost all engine-powered vessels. The purpose of a boiler is to produce high-pressure steam for the engine to propel the vessel. Steam boilers have been in use from the early 1800s to the present day.
Wooden ships have been constructed for thousands of years. Around the world, many different construction techniques have been used, some of them quite extraordinary. The ancient Greeks stitched the planks of their warships together edgewise to form an extremely light frameless load-bearing shell, much like a modern airplane fuselage. However, most wooden ships are built using a basic framing system that has changed little over the centuries.
A tugboat is a small sturdy and powerful vessel designed to push or tow other vessels and barges
Tenacious
You will see them in every sizable port; smart, businesslike small ships, low in the water and surging out to a large inbound ship. Tugs represent power for pushing and pulling, an engine with just enough hull for adequate buoyancy. Thick fenders for close-quarters work, pushing a big ship alongside the quay against the wind, hauling her off at the end of a towing wire.
The lightship Ambrose LV-78 / WLV-505, now on display at the South Street Seaport, along with the tower that replaced her ( since replaced by another tower, and then a buoy that got run over a few times. I'm not sure if there is anything out there now. )
A lightship is a small vessel with minimal engine power and a stout stable hull, designed to act as an anchored long-term floating lighthouse outside of a harbor. They were generally painted in bright red or orange anti-collision colors. Not that it helped much.
Side-scan sonar is a modern method of underwater imaging that can produce remarkably detailed and realistic views of shipwrecks and other bottom features using sound rather than light.
Notice all the detail in this side-scan sonar image of the Delaware.
The US Coast Guard maintains a number of aids to navigation to assist vessels entering and leaving ports, both great ports like New York and Philadelphia, and minor ports like Shark River and Montauk. At sea, these aids take the form of buoys that mark out channels and shipping lanes.
Shipping lanes are like divided highways at sea. Inbound and outbound lanes are separated by a wide "Separation Zone, " which may or may not be depicted on the charts in this website, depending on the scale. Ships "drive on the right" just like cars in civilized countries. At the inbound end where all the lanes converge into the harbor channel, things get messy, and I didn't try to depict it. Likewise, the outer ends of the lanes are not exact either.
A boarding party from the Revenue Cutter Morris prepares to board the passenger vessel Benjamin Adams on 16 July 1861 about 200 miles east of New York. The Benjamin Adams was bound for New York from Liverpool and carried 650 Scottish and Irish immigrants. The Revenue Cutter Service was originally established to enforce U.S. laws at sea and inspected incoming merchant vessels for compliance with those laws, as is illustrated here.
With rare exceptions, scuba diving is a bottom-fixated activity. In the region covered in this website, one may encounter many different bottom types, from rocky pinnacles around Block Island to white sands off Cape May to mud and oyster beds in any estuary. This variation is far greater and more interesting than is found in the tropics. Here is some explanation of what bottom compositions are found where and why:
