Nautical Terms Flashcards
What is a vessels “sheer” ?
Think of double ended sailboat, bow and stern are angled upwards. Essentially gives the boat more buoyancy.
Bulwark vs gunwale? Explain
Bulwark is the “wall” that comes up off of deck
Gunwale is the top part of the bulwark
What does the term “flare” mean in regards to the structure of a ship?
Flare is the outward angle of both sides of the hull from centerline. Think of it as a “V” that flaring outward part keeps the deck drier. Also think of the battleship Iowa, looking at it from the bow, look at the waterline, and both sides “flare” out as the hull leads up to the decks
What is the term used for the area where the stem meets the keel on a vessel?
Forefoot
Bonus : the leading area of the stem is known as what? CUTWATER
Deadrise on a vessel can be explained how?
Deadrise is the angle of rise from the bottom of the boat to a horizontal line. Think of a deep V vs a flat bottom. The difference between the two is the Deadrise
Where are the 2 most common area where you will find stuffing boxes?
At the rudder where the rudderpost enters the hull
Also where the propeller shaft enters the hull. Except your boats are different.
The deck of a cockpit or the interior cabin floor is called what?
Sole
Portholes are openings in the hull to let in air and light. Explain the difference between port light and deadlight in reference to portholes.
A port light is openable
Deadlight is a porthole that cannot be opened
LOA vs LWL - what are they?
LOA - Length Over All excludes bowsprits or davits, its only the hull
LWL - Loaded Waterline Length -
Explain the difference between wharf and pier
Wharf is Parallel to shore
Piers are perpendicular
Term used for Tide coming in is what? Term used for tide going out is what?
Coming in - Flood tide
Going out - Ebb tide
What is a “Spring Tide” and what are some considerations for this time?
Spring tides are during full or new moons and its when you have the biggest difference between high and low tides
Explain to be what a “neap tide” is? What’s its significance?
A neap tide occurs at the first and third quarters of of the moons and is the time when there is the least amount of difference between high and low tides
What’s the difference between current and drift?
Current is best described as the horizontal movement of water
Drift refers more to the velocity of the current
Explain what latitude and longitude lines are? What are they also referred to as?
Latitude lines start at the equator and up and down towards the poles. Also referred to as Parallels
Longitude lines also known as meridians are the lines that run north to south with Greenwich being the prime meridian
