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Welcome to AUXSEA House Keeping Items 1.AUXOP Introduction 2.Course format 3.Recording and Posting of Presentation 4.Questions before we begin?

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Presentation on theme: "Welcome to AUXSEA House Keeping Items 1.AUXOP Introduction 2.Course format 3.Recording and Posting of Presentation 4.Questions before we begin?"— Presentation transcript:

1 Welcome to AUXSEA House Keeping Items 1.AUXOP Introduction 2.Course format 3.Recording and Posting of Presentation 4.Questions before we begin?

2 Introduction The term SEAMANSHIP literally encompasses the entire subject of boating. Reference text: any version of “Chapman’s Seamanship”. Text: P Apr 1992 Final examination based on study questions at end of each chapter in study guide.

3 TERMINOLOGY bow/forward starboard gunwale cleatportStern/aft transom

4 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),

5 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

6 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 vessel’s decks drier.

7 TERMINOLOGY Sheer Flare

8 HULL BOTTOMS flat bottom multi-hullround bottom vee bottom

9 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

10 Cabin Types TRUNK : Does not extend fully from gunwale to gunwale; has walking space on both sides

11 Cabin Types RAISED DECK: Does extend all the way, from gunwale to gunwale; NO walking space on either side.

12 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 it’s 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.

13 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).

14 Motions PITCH: The “UP” and “DOWN” vertical motion of the bow as the boat rotates around it’s lateral axis. ROLL: The gunwale–to - gunwale motion of the hull as it rotates around it’s longitudinal axis. YAW: The swinging motion of the bow from side to side, as the hull rotates around it’s 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.

15 SAILBOAT CONFIGURATION IDENTIFICATION DEPENDS UPON THE NUMBER OF MASTS AND SAILS AND WHERE PLACED. Yawl Sloop Ketch Catboat

16 Mainsail CATBOAT CONFIGURATION CATBOAT: Single mast; One mainsail Marconi or Gaff

17 SLOOP: Single mast; mainsail and jib. MainsailJib SLOOP CONFIGURATION

18 Two masts; smaller aft; after mast ahead of steering station STEERING STATION KETCH CONFIGURATION

19 YAWL CONFIGURATION Two masts; smaller BEHIND the steering station STEERING STATION

20 SCHOONER: At least two masts; Main is aft and taller. Foremast is foward. May carry many sails. Foremast MAIN SCHOONER CONFIGURATION

21 BOAT BUILDING MATERIALS Five (5) materials considered FIBERGLASS WOOD STEEL ALUMINUM FABRIC

22 FIBERGLASS STRANDS OF GLASS, SATURATED WITH RESIN and allowed TO PROPERLY DRY AND CURE Chopped Strands

23 FIBERGLASS MOST POPULAR building material REASON FOR PRIMARY CHOICE: EASE OF MAINTENANCE

24 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.

25 ADVANTAGES OF FIBERGLASS IMPERVIOUS TO MARINE ANIMALS, WORMS / BORERS (NOT GROWTH.) 1.NO DRY ROT 2.FEW OR NO SEAMS / JOINTS 3.NO LEAKS FROM SEAMS / JOINTS 4.COLOR MOLDED IN 5.STRONG 6.MOLD INTO ALMOST ANY SHAPE 7.LOW MAINTENANCE

26 Disadvantages Of Fiberglass 1.HEAVIER THAN WATER: READILY SINKS 2.EASIER TO COVER UP SHODDY WORKMANSHIP

27 TWO KINDS OF RESINS 1.POLYESTER: VERSATILE EASY TO WORK WITH/ HANDLE INEXPENSIVE 2. EPOXIES: STRONGER MORE EXPENSIVE MORE DIFFICULT TO WORK WITH.

28 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

29 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

30 MOLDS MATCHED DIE: MALE / FEMALE MOLDS CLAMPED TOGETHER LAMINATE USED BETWEEN (SANDWICHED) BALSA WOOD FOAMED PLASTICS PLYWOOD

31 WOOD CONSIDERATION FOR USE 1. STRENGTH 2. AVAILABILITY 3. WORKABILITY 4. WATER ABSORPTION 5. LEAST NOISY

32 WOOD CONSTRUCTION MORE DECAY RESISTANT: HARD WOODS: ASH, MAHOGANY, TEAK, OAK LESS DECAY RESISTANT: SOFTER WOODS: CEDAR, FIR, PINE

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

34 STEEL CONSTRUCTION DISADVANTAGES 1.QUICK DETERIORATION 2. CONSIDERABLE CONTINUOUS MAINTENANCE

35 STEEL CONSTRUCTION ADVANTAGES 1.STRONGEST STRENGTH – TO – WEIGHT RATIO 2. STIFF \ RESISTANT TO: IMPACT – FATIGUE - ABRASION 3. LESS NOISY THAN ALL BUT WOOD

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

37 ALUMINUM CONSTRUCTION DISADVANTAGES 1.SUSCEPTIBLE TO ELECTROLYSIS 2.HEAT CONDUCTOR 3. NOISY 4. EASY TO DAMAGE

38 STEERING SYSTEMS

39 Drum and Cable Steering 4/2010

40 Rack & Pinion 4/2010

41 REVIEW QUESTIONS NO. 1 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.

42 REVIEW QUESTIONS 1. A sloop is a sailboat with________ a. a single mast with a mainsail and jib

43 REVIEW QUESTIONS NO. 2 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.

44 REVIEW QUESTIONS 2. A fiberglass hull is constructed of strands and layers of fiberglass ________________ c. saturated with resin

45 REVIEW QUESTIONS NO 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

46 REVIEW QUESTIONS 3. On a strength-to-weight ratio, sheet steel is ____________________ a. stronger than fiberglass

47 REVIEW QUESTIONS NO 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.

48 REVIEW QUESTIONS 4. Steel boat hulls ___________________ a. require considerable maintenance

49 REVIEW QUESTIONS NO 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

50 REVIEW QUESTIONS 5. The simplest type of steering mechanism for a boat is the ________________________ d. tiller

51 REVIEW QUESTIONS NO Limber holes____________________ a. permit water to pass through a boat’s frame. b. provide finger holds for lifting floor boards. c. provide ventilation in holds. d. are used to inspect the bilges.

52 REVIEW QUESTIONS 6. Limber Holes ________________ a. permit water to pass through a boat’s frame

53 REVIEW QUESTIONS NO 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

54 REVIEW QUESTIONS 7. The curve or sweep of a vessel, as viewed from the side, is called the ____ c. sheer

55 REVIEW QUESTIONS NO 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

56 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

57 REVIEW QUESTIONS NO The use of two or more different materials, when constructing the hull, is called_____construction. a. layered b. multiple c. composite d. feathered

58 REVIEW QUESTIONS 9. The use of two or more different materials, when constructing the hull, is called _____ construction. c. composite

59 REVIEW QUESTIONS NO The top advantage of a steel hull is_______ a. it’s weight b. it is quieter c. it is easier to maintain d. it is fire proof

60 REVIEW QUESTIONS 10. The top advantage of a steel hull is____ b. it is quieter


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