Boat Crew Study Guide sn brook Kolarich June 2012 sta montauk The 8 responsibilities of a boat crewman

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  The emergency signal mirror is a pocket sized mirror with a sighting hole in the center and a lanyard attached. The mirror is used to attract the attention of passing aircraft, boats, or ground rescue teams by reflecting light at them. Directions are printed on the back and the signal can be seen for a great distance.
  

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  The whistle is a small, hand-held device that produces a loud sound when it is blown.
  

whistle. It can be heard up to 1100 yards away, good for use during heavy weather.

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  A pyrotechnic illumination signal that contains seven screw-in cartridge flares and one pencil type projector. Produces a red star display at an altitude of 250-650 ft for a minimum of 4.5 seconds at 12,000 candle power.
  

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  Lightweight battery operated strobe light. Flashes approximately 50 times a minute at 150,000 candle power. Battery can last 9 hours if used continuously, 18 if used intermittently.
  

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  Used to free crewmembers from entangled line. Tip is blunted to prevent personal injury or damage to personal protective equipment.
  

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  Capable of broadcasting a distress signal that can be received and tracked world-wide. Broadcasts on both 406 MHz and 121.5 MHz, accurate within 3 nm. Lasts 24 hours, run by NOAA.
  

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  Nighttime illumination signal device. Reaches 650-700 ft in elevation producing a suspended white star display that burns for about 36 seconds at 125,000 candle power and descends at a rate of 10-15 ft/second.
  

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  A pyrotechnic smoke and red flare illumination signal used during the day or night. Each end burns for 20 seconds. The day end produces orange smoke whereas the night end produces a red flare and is identified by two raised metal bands around the circumference and three raised bumps that glow in the dark.
  

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  Anchor Line: 1 ½” DBN, 250 ft
  
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  Anchor Chain: ¼” PVC coated, 4 ft
  
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  Tow Line: 2 ¼” DBN, 300ft
  
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  Skiff Hook Line: 1 ½”, 9 ft
  
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  Mooring Lines: Either 2” or 2 ¼” DBN, 25 ft
  
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  Alongside Lines: Either 2” or 2 ¼” DBN, 35 ft
  

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  Anchor Line: 2 ¼” DBN, 300 ft
  
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  Anchor Chain: 3/8” stainless steel, 9 ft
  
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  Tow Line Upper Reel: 2 ¼” DBN, 300ft
  
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  Tow Line Lower Reel: 3 ¼” DBN, 900ft
  
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  Drouge/Grapnel Line: 2 ¼” DBN, 200ft
  
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  Skiff Hook Line: 2” DBN, 25ft
  
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  Heaving lines: minimum of 70ft, 2 each
  
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  Alongside Lines: 8 each, 4 smaller, 4 larger
  

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  Transducer (measures depth)
  
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  Speed Log
  
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  Sea-Chest Valve (sucks in raw water to cool engines)
  
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  H-Vac (air conditioning & heat)
  
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  Exhaust vents x 2
  
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  Shaft Strut Extensions x 2 (holds props out in water)- also the lowest part of the boat in the water
  
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  Rudder Posts x 2
  

1. 
   Displacement Hull: Pushes away water allowing the hull to settle in the water. Underway, the hull pushes water away creating waves.
   
2. 
   Planning Hull: At rest the planning hull and displacement hull both displace water around them. Once underway, the planning hull skims along the surface lifting the hull up and onto the surface of the water.
   
3. 
   Semi-Displacement Hull: Has characteristics of both displacement and planning hulls. Up to a certain power and speed the hull remains in a displacement mode, but beyond a certain point the hull is raised to a partial plane.
   

1. 
   Bar Keel: The bar keel is popular because of its stiffeners (vertical or upright members which increase strength) which protect the boat’s hull plating if the boat grounds on a hard bottom. It also reduces rolling. However, the bar keep extends beneath the bottom of the boat, increasing the draft.
   
2. 
   Flat Plate Keel: The flat plate keel has a plate that is perpendicular to the centerline of the hull. A vertical center keel that runs internal to the hill at the centerline typically supports the flat plate keel.
   

CH (12) / 156.6 MHz Ship – Ship

CH (13) / 156.65 MHz Bridge – Bridge

CH (16) / 156.8 MHz International Distress

CH (21) / 157.05 MHz Intra CG (Secondary)

CH (22A) / 157.1 MHz CG – Non

CH (23A) / 157.15 MHz (Primary)

CH (81) 157.075 MHz