USCG COXSWAIN UPDATED SCRIPTED EXAM QUESTIONS
AND SOLUTIONS GUARANTEE A+
✔✔OTH Basic Construction Specs - ✔✔Hull Construction Material: 0.0190-inch-thick
5086 H116 Aluminum plate with a ¼ thick 6- inch-wide beaching plate welded to the
keel from frame 14 to 21 ½ and an aluminum transom.
Frame Interval: 24 Inches Apart and are 0.0190-inches-thick aluminum.
Cabin/Superstructure Construction Material: Console: 1/8 inch 5086 H116 Aluminum
Plate.
Highest Fixed Point: Mast Raised: 8'10 ¾"; Mast Lowered 5'6"
Highest Un-Fixed Point: HF Antenna: 12' 1/2"
Length Overall: Bucket Down: 25' 9"; Bucket Up: 25' 5 1/8"
Beam: 8' 6" including collar.
Freeboard at Lowest Point: Sponson + ½ inch
Full Load Displacement: 11,431lbs
Draft: 28 inches
Location of Deepest Draft: Jet Outtake
✔✔Water Tight Integrity - ✔✔CB-L: Not watertight
OTH
Number of Watertight Compartments: 2
Water-tight Hatches: 4 Latching hatches above sea strainer, battery bank, sea chest,
and waterjet compartment.
✔✔Center of Gravity - ✔✔Point at which the weight of the boat acts vertically
downwards. Generally, the lower the center of gravity, the more stable the vessel.
✔✔bouyancy - ✔✔Upward force of water displaced by the hull. The force of buoyancy
keeps the boat afloat; however, it may be overcome if too much weight is added.
✔✔Equilibrium - ✔✔When a boat is at rest, the center of buoyancy acting
upwards/vertically is below the center of gravity acting downwards. It is at this point that
a boat is considered to be in equilibrium
✔✔Rolling - ✔✔When a boat rolls, the force of the center of gravity will move in the
same
direction as the roll. The downward force of gravity is offset by the upward
force of buoyancy and causes the boat to heel.
✔✔Heeling - ✔✔Heeling is when the underwater volume of the boat changes shape
causing the center of buoyancy to move. The center of buoyancy will move towards the
part of the hull that is more
deeply immersed. When this happens, the center of buoyancy will no longer be aligned
vertically with the center of gravity.
, ✔✔Determine if Other Boat is Listing - ✔✔1) Observe the roll of your own boat and for
distressed vessel, observe its roll upon approaching and when under tow.
2) Be aware of external forces- wind, waves, water depth
3) Be aware of control loading, amount of weight and placement, on own and the
distressed craft.
4) If necessary, attempt to keep your equipment aboard your vessel when dewatering
the vessel.
5) Attempt to tow the distressed vessel only after any loss of stability has been
corrected.
6) Adjust course, speed, or both as necessary to decrease rolling or listing
7) Avoid sharp turns or turns at high speed when loss of stability is possible.
✔✔Free Surface Effect - ✔✔Compartment is partly filled with liquid, the liquid will flow
from side to side as the vessel rolls/pitches.
Corrective actions include:
1) Minimize the number of partially filled tanks (fuel, water, or cargo);
2) Prevent cargo from rolling back and forth on the deck,
3) If possible, store cargo low and close to the centerline.
✔✔Downflooding - ✔✔The entry of water into the hull, resulting in progressive flooding
and loss of stability.
Corrective actions include:
1) Keep all watertight fittings and openings secured when a vessel is underway
2) Pump out the water.
✔✔Topside Icing - ✔✔Icing can increase the displacement of a boat by adding weight
above the center of gravity causing the center of gravity to rise causing vessel to heel
over and greatly reduces stability
Corrective actions include:
1) Change course, speed, or both to reduce freezing spray and rolling,
2) Physically remove the ice.
✔✔Two Types of Stability - ✔✔Longitudinal and transverse
Longitudinal (Fore/Aft)- stability tends to balance the boat, preventing it from pitching
end-
over-end (Pitch Poling).
Transverse (Athwartships)- stability tends to keep the boat from rolling over (Capsizing)
✔✔Righting Movement - ✔✔Force causing a vessel to react against a roll and return to
an even keel.
AND SOLUTIONS GUARANTEE A+
✔✔OTH Basic Construction Specs - ✔✔Hull Construction Material: 0.0190-inch-thick
5086 H116 Aluminum plate with a ¼ thick 6- inch-wide beaching plate welded to the
keel from frame 14 to 21 ½ and an aluminum transom.
Frame Interval: 24 Inches Apart and are 0.0190-inches-thick aluminum.
Cabin/Superstructure Construction Material: Console: 1/8 inch 5086 H116 Aluminum
Plate.
Highest Fixed Point: Mast Raised: 8'10 ¾"; Mast Lowered 5'6"
Highest Un-Fixed Point: HF Antenna: 12' 1/2"
Length Overall: Bucket Down: 25' 9"; Bucket Up: 25' 5 1/8"
Beam: 8' 6" including collar.
Freeboard at Lowest Point: Sponson + ½ inch
Full Load Displacement: 11,431lbs
Draft: 28 inches
Location of Deepest Draft: Jet Outtake
✔✔Water Tight Integrity - ✔✔CB-L: Not watertight
OTH
Number of Watertight Compartments: 2
Water-tight Hatches: 4 Latching hatches above sea strainer, battery bank, sea chest,
and waterjet compartment.
✔✔Center of Gravity - ✔✔Point at which the weight of the boat acts vertically
downwards. Generally, the lower the center of gravity, the more stable the vessel.
✔✔bouyancy - ✔✔Upward force of water displaced by the hull. The force of buoyancy
keeps the boat afloat; however, it may be overcome if too much weight is added.
✔✔Equilibrium - ✔✔When a boat is at rest, the center of buoyancy acting
upwards/vertically is below the center of gravity acting downwards. It is at this point that
a boat is considered to be in equilibrium
✔✔Rolling - ✔✔When a boat rolls, the force of the center of gravity will move in the
same
direction as the roll. The downward force of gravity is offset by the upward
force of buoyancy and causes the boat to heel.
✔✔Heeling - ✔✔Heeling is when the underwater volume of the boat changes shape
causing the center of buoyancy to move. The center of buoyancy will move towards the
part of the hull that is more
deeply immersed. When this happens, the center of buoyancy will no longer be aligned
vertically with the center of gravity.
, ✔✔Determine if Other Boat is Listing - ✔✔1) Observe the roll of your own boat and for
distressed vessel, observe its roll upon approaching and when under tow.
2) Be aware of external forces- wind, waves, water depth
3) Be aware of control loading, amount of weight and placement, on own and the
distressed craft.
4) If necessary, attempt to keep your equipment aboard your vessel when dewatering
the vessel.
5) Attempt to tow the distressed vessel only after any loss of stability has been
corrected.
6) Adjust course, speed, or both as necessary to decrease rolling or listing
7) Avoid sharp turns or turns at high speed when loss of stability is possible.
✔✔Free Surface Effect - ✔✔Compartment is partly filled with liquid, the liquid will flow
from side to side as the vessel rolls/pitches.
Corrective actions include:
1) Minimize the number of partially filled tanks (fuel, water, or cargo);
2) Prevent cargo from rolling back and forth on the deck,
3) If possible, store cargo low and close to the centerline.
✔✔Downflooding - ✔✔The entry of water into the hull, resulting in progressive flooding
and loss of stability.
Corrective actions include:
1) Keep all watertight fittings and openings secured when a vessel is underway
2) Pump out the water.
✔✔Topside Icing - ✔✔Icing can increase the displacement of a boat by adding weight
above the center of gravity causing the center of gravity to rise causing vessel to heel
over and greatly reduces stability
Corrective actions include:
1) Change course, speed, or both to reduce freezing spray and rolling,
2) Physically remove the ice.
✔✔Two Types of Stability - ✔✔Longitudinal and transverse
Longitudinal (Fore/Aft)- stability tends to balance the boat, preventing it from pitching
end-
over-end (Pitch Poling).
Transverse (Athwartships)- stability tends to keep the boat from rolling over (Capsizing)
✔✔Righting Movement - ✔✔Force causing a vessel to react against a roll and return to
an even keel.
