Welcome to AUXSEA

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Welcome to AUXSEA

• House Keeping Items
• AUXOP Introduction
• Course format
• Recording and Posting of Presentation
• Questions before we begin?

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Introduction

• The term SEAMANSHIP literally encompasses the
  entire subject of boating.
• Reference text any version of Chapmans
  Seamanship.
• Text P16794.41 115 Apr 1992
• Final examination based on study questions at end
  of each chapter in study guide.

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TERMINOLOGY
starboard
gunwale
bow/forward
cleat
port
Stern/aft
transom
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TERMINOLOGY

• BOW The most foward portion of the main hull
  (the pointy end).
• FOWARD Towards (in the direction of) the Bow.
• AHEAD Hull motion relative to the bow.
• STERN Aftermost portion of the main hull the
  back end of the vessel (the BLUNT end),

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TERMINOLOGY

• AFT In the direction of the stern towards the
  back end of the boat.
• ASTERN Direction of hull motion relative to the
  stern backing motion relative to the bow.
• SIDES Looking towards the bow, from the stern
  (on either side of the keel)
• Side to your right is STARBOARD.
• Side to your left is PORT

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TERMINOLOGY

• BEAM The widest point of the hull, gunwale to
  gunwale.
• ATHWARTSHIP Any measurement made from one side
  of the hull to the other at 90 degrees to the
  keel.
• SHEER The curve or sweep of the deck, from bow
  to stern, of a vessel when viewed from the side
• FLARE The outward curvature of the sides of the
  boat near the bow (looking head-on), which helps
  to keep the vessels decks drier.

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TERMINOLOGY

• Sheer
• Flare

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HULL BOTTOMS
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Hull Types

• Displacement - Displacement of water weight of
  boat
• Sailboats, trawlers
• Planing
• Rise over bow wave and glide on water
• High speed
• PWC, runabouts, small cruisers
• Combination
• Semi-displacement hulls

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Cabin Types

• TRUNK Does not extend fully from gunwale to
  gunwale has walking space on both sides

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Cabin Types

• RAISED DECK Does extend all the way, from
  gunwale to gunwale NO walking space on either
  side.

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OTHER BOATING TERMS

• KEELSON A timber ( can also be of metal)
  fastened along the top of the keel, inside of the
  hull.
• LIMBER HOLES Passages cut into the area next to
  the keel to allow water to properly flow to its
  lowest point, to be pumped out.
• KING POST The spoke of a steering wheel that is
  vertical when the rudder is exactly centered
  along the keel.
• THWART A transverse seat generally in a rowing
  craft.

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OTHER BOATING TERMS

• BOOT TOP The general area of the exterior hull
  at the waterline.
• THWART STANCHION A vertical support (stanchion)
  for a transverse seat (thwart).

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Motions

• PITCH The UP and DOWN vertical motion of the
  bow as the boat rotates around its lateral axis.
• ROLL The gunwaleto - gunwale motion of the hull
  as it rotates around its longitudinal axis.
• YAW The swinging motion of the bow from side to
  side, as the hull rotates around its vertical
  axis.
• BROACH Veer and pitch forward because of bad
  steering or a sea hitting the stern, causing it
  to present a side to the wind and sea, losing
  steerage, and possibly suffer serious damage
• CAPSIZING Vessel rolls over bottom up difficult
  or impossible recovery.
• PITCHPOLING Commonly following a BROACH and loss
  of directional control. Bow plunges deep turns
  sharply to one side vessel rolls and capsizes.
  Violent potentially lethal maneuver.

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SAILBOAT CONFIGURATION

• IDENTIFICATION DEPENDS UPON THE NUMBER OF MASTS
  AND SAILS AND WHERE PLACED.

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CATBOAT CONFIGURATION
Mainsail
CATBOAT Single mast One mainsail Marconi or
Gaff
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SLOOP CONFIGURATION
Mainsail
Jib
SLOOP Single mast mainsail and jib.
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KETCH CONFIGURATION
STEERING STATION
Two masts smaller aft after mast ahead of
steering station
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YAWL CONFIGURATION
STEERING STATION
Two masts smaller BEHIND the steering station
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SCHOONER CONFIGURATION
MAIN
Foremast
SCHOONER At least two masts Main is aft and
taller. Foremast is foward. May carry many sails.
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BOAT BUILDING MATERIALS

• Five (5) materials considered
• FIBERGLASS
• WOOD
• STEEL
• ALUMINUM
• FABRIC

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FIBERGLASS

• STRANDS OF GLASS, SATURATED WITH RESIN and
  allowed TO PROPERLY DRY AND CURE

Chopped Strands
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FIBERGLASS

• MOST POPULAR building material
• REASON FOR PRIMARY CHOICE
• EASE OF MAINTENANCE

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TERMINOLOGY
A fiberglass hull is composed of matting,
roving, cloth and strands of fiberglass saturated
with plastic resin(s) very similar to
steel-reinforced concrete.
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ADVANTAGES OF FIBERGLASS

• IMPERVIOUS TO MARINE ANIMALS, WORMS / BORERS
  (NOT GROWTH.)
• NO DRY ROT
• FEW OR NO SEAMS / JOINTS
• NO LEAKS FROM SEAMS / JOINTS
• COLOR MOLDED IN
• STRONG
• MOLD INTO ALMOST ANY SHAPE
• LOW MAINTENANCE

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Disadvantages Of Fiberglass

1. HEAVIER THAN WATER READILY SINKS
2. EASIER TO COVER UP SHODDY WORKMANSHIP

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TWO KINDS OF RESINS

• POLYESTER
• VERSATILE
• EASY TO WORK WITH/ HANDLE
• INEXPENSIVE
• 2. EPOXIES
• STRONGER
• MORE EXPENSIVE
• MORE DIFFICULT TO WORK WITH.

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RESIN ADDITIVES

1. Hardeners HARDEN THE RESIN
2. Driers CONTROL THE CURING TIME
3. Fire Suppressants MAKE THE RESIN FIRE RETARDANT
4. ALL RESINS EXTREMELY FLAMMABLE

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MOLDS
MALE MOLD PLUG Exact size, shape of object to
mold FEMALE MOLD CAVITY MOLD USED FOR
HAND-LAYUP CHOPPED STRAND NOTE Gel Coat
applied first, to the inside of the female
mold. BLOWGUN PROCESS Fastest, smoothest results
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MOLDS
MATCHED DIE MALE / FEMALE MOLDS CLAMPED
TOGETHER LAMINATE USED BETWEEN
(SANDWICHED) BALSA WOOD FOAMED
PLASTICS PLYWOOD
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WOOD
CONSIDERATION FOR USE 1. STRENGTH 2.
AVAILABILITY 3. WORKABILITY 4. WATER
ABSORPTION 5. LEAST NOISY
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WOOD CONSTRUCTION
MORE DECAY RESISTANT HARD WOODS ASH,
MAHOGANY, TEAK, OAK LESS DECAY
RESISTANT SOFTER WOODS CEDAR, FIR, PINE
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WOOD DISADVANTAGES

1. NUMBER ONE DRY ROT
2. HIGHLY SUCEPTIBLE TO WORMS, BORERS
3. ABSORBS WATER
4. EASILY DAMAGED

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STEEL CONSTRUCTION

• DISADVANTAGES
• QUICK DETERIORATION
• 2. CONSIDERABLE CONTINUOUS
  MAINTENANCE

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STEEL CONSTRUCTION

• ADVANTAGES
• STRONGEST STRENGTH TO WEIGHT RATIO
• 2. STIFF \ RESISTANT TO
• IMPACT FATIGUE - ABRASION
• 3. LESS NOISY THAN ALL BUT WOOD

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ALUMINUM CONSTRUCTION
ADVANTAGES 1. LIGHT WEIGHT 2.
IMPERVIOUS TO MARINE ANIMALS ( NOT GROWTH ) 3.
FAIRLY EASY TO FORM
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ALUMINUM CONSTRUCTION

• DISADVANTAGES
• SUSCEPTIBLE TO ELECTROLYSIS
• HEAT CONDUCTOR
• 3. NOISY
• 4. EASY TO DAMAGE

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STEERING SYSTEMS
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Drum and Cable Steering
4/2010
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Rack Pinion
4/2010
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REVIEW QUESTIONS NO. 1

• A sloop is a sailboat with _______
• a. a single mast, with a mainsail and a jib
• b. two masts, the aftermast being shorter
• than the foreword mast.
• c. a single mast rigged to hoist only one sail.
• d. two or more masts the aftermast taller than
• the foreword mast.

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REVIEW QUESTIONS
1. A sloop is a sailboat with________ a. a
single mast with a mainsail and jib
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REVIEW QUESTIONS NO. 2

• A fiberglass hull is constructed of strands and
  layers of fiberglass ______________
• a. bonded with hydraulic cement.
• b. saturated with latex cement.
• c. saturated with resin.
• d. reinforced with steel mesh.

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REVIEW QUESTIONS
2. A fiberglass hull is constructed of strands
and layers of fiberglass ________________ c.
saturated with resin
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REVIEW QUESTIONS NO. 3
3. On a strength-to-weight ratio, sheet steel
is_________________ a. stronger than
fiberglass b. equal to wood c. weaker than
aluminum d. equal to fiberglass
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REVIEW QUESTIONS
3. On a strength-to-weight ratio, sheet steel
is ____________________ a. stronger than
fiberglass
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REVIEW QUESTIONS NO. 4
4. Steel boat hulls___________________ a.
require considerable maintenance b. require no
protective painting for growths c. have a higher
strength-to-weight ratio than wood and
aluminum but not fiberglass. d. are less noisy
than all other boat building materials.
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REVIEW QUESTIONS
4. Steel boat hulls ___________________ a.
require considerable maintenance
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REVIEW QUESTIONS NO. 5
5. The simplest type of steering mechanism for a
boat is the____________________ a. rack and
pinion b. drum and cable c. sprocket and
chain d. tiller
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REVIEW QUESTIONS
5. The simplest type of steering mechanism for a
boat is the ________________________ d. tiller
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REVIEW QUESTIONS NO. 6
6. Limber holes____________________ a. permit
water to pass through a boats frame. b.
provide finger holds for lifting floor
boards. c. provide ventilation in holds. d. are
used to inspect the bilges.
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REVIEW QUESTIONS
6. Limber Holes ________________ a. permit
water to pass through a boats frame
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REVIEW QUESTIONS NO. 7
7. The curve or sweep of a vessel, as viewed from
the side is called the ______ a. freeboard b
boot top c. sheer d. tumble home
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REVIEW QUESTIONS
7. The curve or sweep of a vessel, as viewed from
the side, is called the ____ c. sheer
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REVIEW QUESTIONS NO. 8
8. The outward curvature of the sides of the
hull, near the bow, that is used to keep the
deck drier, is called the_________________ a.
sheer b. freeboard c. trunk d. flare
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REVIEW QUESTIONS
8. The outward curvature of the sides of the hull
near the bow, that is used to keep the deck
drier, is called the________________ d. flare
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REVIEW QUESTIONS NO. 9
9. The use of two or more different materials,
when constructing the hull, is called_____construc
tion. a. layered b. multiple c. composite d.
feathered
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REVIEW QUESTIONS
9. The use of two or more different materials,
when constructing the hull, is called
_____ construction. c. composite
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REVIEW QUESTIONS NO. 10
10. The top advantage of a steel hull
is_______ a. its weight b. it is quieter c.
it is easier to maintain d. it is fire proof
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REVIEW QUESTIONS
10. The top advantage of a steel hull is____ b.
it is quieter