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How submarines floats on water surface and submerge into water?
Air is trapped in the ballast tanks which surround the boat. This makes it positively bouyant (why it floats). To submerge the boat the air is vented out of the tanks via the main ballast tank vents which are at the highest point in the tank. As the air escapes seawater comes into the tank through the flood grates located at the bottom of the main ballast tanks. This makes the boat heavier or negatively bouyant and causes it to sink. Once submerged then the crew adjusts the weight of the boat (called trimming the boat) so that it is as close to neutrally bouyant as possible.
When must the certificate of boat registration be carried on board the vessel?
A certificate of boat registration must be carried on the boat when the boat is in operation. If the registration is not on the boat the owner could be fined.
What is the primary responsibility for a vessel operator assisting a boat in distress?
Keeping his/her vessel and crew out of danger
What is the difference between a ship and a boat?
While there isnt really a legal definition of what constitutes a boat or a ship, seamen generally go by the principle definition that a BOAT can be carried by a SHIP but a SHIP cannot be carried by a BOAT.
What indicates an emergency aboard a boat?
Orange smoke blowing from the boat.
What indicates an emergency situation on a boat?
Orange smoke blowing from the boat
What's the difference between a ship and a boat?
While there isnt really a legal definition of what constitutes a boat or a ship, seamen generally go by the principle definition that a BOAT can be carried by a SHIP but a SHIP cannot be carried by a BOAT.
What should you do if your boat capsizes and remains afloat?
stay with the boat and signal for help.
What should you do if your small opening boat capsized?
stay with the boat and signal for help.
What indicates an emergency situation aboard a boat?
Orange smoke blowing from the boat.
Which of the following indicates an emergency situation aboard a boat?
Orange smoke blowing from the boat.
What is something that is carried on a boat that begins with c?
cargo
