1. Chapter 2 BOAT MAINTENANCE

2. HAULING OUT PROPER BLOCKING

3. BOAT LAYUP TASKS CLEAN BOTTOM DRAIN ALL TANKS & BILGE FILL FUEL TANKS - TREAT CHANGE ENGINE OIL

4. 44/2010 REMOVE BATTERY & PERISHABLES CLEAN HEAD & HOLDING TANK REMOVE CLOTHES, BEDDING, PFD’S, ETC WASH WITH FRESH WATER VENTILATE BOAT

5. 54/2010 BOTTOM PAINT –CHEMICALLY SLOW DOWN - PREVENT VEGETABLE GROWTH AND MARINE ANIMAL LIFE MATCH PAINT TO BOAT MATERIALS ENVIRONMENTAL CONSIDERATIONS Ted Potter DCAPT/SHR

6. BOTTOM The PROBLEM: BOTTOMS BECOME FOULED BY MARINE GROWTH. TWO FORMS OF MARINE LIFE 1.VEGETABLE: GRASSES, WEEDS, ALGAE & FUNGI; Congregate around waterline but may cover entire bottom. 2.ANIMAL : WORMS, BORERS, SHELL FISH, BARNACLES.

7. EFFECTS OF BOTTOM FOULING 1.SLOWS HULL SPEEDS 2.INCREASES FUEL CONSUMPTION 3.INTERFERS WITH MANEUVERABILITY 4.REDUCES OVERALL EFFICIENCY OF THE VESSEL

8. EFFECTS OF BOTTOM FOULING 1.ACCUMULATIONS OF BARNACLES OR OYSTERS MAY MANDATE GRINDING DOWN OF THE HULL. 2.VERY EXPENSIVE, EVEN IF POSSIBLE. 3.ACCUMULATIONS OF ONLY A FEW WORMS IN A WOOD HULL CAN BE DEVASTATING. 4.ALL OTHER HULL MATERIALS ARE IMPERVIOUS TO BORERS / WORMS.

9. MODERN DAY BOTTOM PAINTS TWO IMPORTANT ELEMENTS COPPER MERCURY Very effective in preventing fouling by maintaining antiseptic film over the boat bottom

10. Disadvantages Of Bottom Paint 1.GALVANIC ACTION (ELECTRONIC CORROSION) : CAUSED BY METALLIC PAINT SALTS; MERCURY / COPPER. 2. AFFECTS ALL ELECTRONICS AND THEIR PERFORMANCE. 3.DESTROYS METALLIC OBJECTS SUCH AS PROPELLERS, SHAFTS, RUDDER BLADES, STRUTS, ETC.

11. Disadvantages Of Bottom Paints 4. ZINCS (NEVER PAINTED)must be properly attached to each component part to combat GALVANIC ACTION. 5. GREAT CARE MUST BE TAKEN TO PROPERLY MATCH THE PAINT TO YOUR BOAT’S NEEDS. 6. PAINT MANUFACTURERS HAVE DEVELOPED REASONABLE SOLUTIONS.

12. DRY ROT 1.WOOD: Anywhere…and WOODEN BOATS in particular. 2.Comes and goes, almost at random. 3.GREAT MISNOMER: Dry Rot ONLY occurs in the presence of FRESH WATER MOISTURE 4.CAUSE: A FUNGUS 5.Salt water seems to discourage the fungus but will NOT cure it.

13. DRY ROT - DETECTION 1.Distinctively BAD ODOR. Once detected, never forgotten. 2.Look in dark places; in the bilge; along the garboard strake; floor boards; all frames; any-where two pieces of wood touch each other. 3.VISIBLE EVIDENCE: Spongy spots in the wood; whitish powder, weaknesses in wood surface.

14. DRY ROT - REMOVAL 1.PROBE with knife or pick to discover it. 2.REMOVE ALL OF IT, IMMEDIATELY! The fungus spreads like wildfire. 3.CUT IT OUT with a knife including some of the good wood, just to make certain you get it all. 4.Treating it is NOT enough.

15. DRY ROT - PROTECTION 1.There are some reliable treatments on the market and more are appearing. 2.BEST PROTECTION: Keep fresh water, including condensation, OUT OF YOUR BOAT! 3.Keep the boat WELL VENTILATED and DRY!

16. GALVANIC ACTION 1.AN ELECTRO-CHEMICAL PROCESS whereby an ELECTRICAL CURRENT is generated when TWO DISSIMILAR METALS are connected IN ANY WAY.

17. GALVANIC ACTION 1.PRIME CAUSE OF METALLIC DESTRUCTION IN BOATS. 2.SALT WATER BIGGEST OFFENDER 3.ONE METAL ALWAYS SACRIFICED

18. GALVANIC ACTION TWO METAL CLASSIFICATIONS 1.CURRENT FLOWS FROM THE LEAST NOBLE TO THE MOST NOBLE METAL. 2.MOST NOBLE: CURRENT FLOWS into. 3.LEAST NOBLE: CURRENT FLOWS out of. 4.Current OUT OF destroys the (LEAST NOBLE) metal.

19. GALVANIC ACTION MOST NOBLE ( Least susceptible and least sacrificed): Mercury, Monel, Nickel, Silicon Bronze LEAST NOBLE ( MOST SUSCEPTIBLE TO DESTRUCTION): BRASS, ALUMINUM, ANYTHING GALVANIZED, ZINC and MAGNESIUM.

20. GALVANIC ACTION 1.Remember: It takes two to tango! There are ALWAYS more than two dissimilar metals on any boat! 2.The PROBLEM is ALWAYS there, unless taken care of!

21. GALVANIC ACTION Any time you have two different metals that are physically or electrically connected and immersed in seawater, they become a battery. Current flows between the two metals. The electrons that make up that current are supplied by one of the metals giving up bits of itself-in the form of metal ions- to the seawater. This is called galvanic corrosion and, left unchecked, it quickly destroys underwater metals. The most common casualty of galvanic corrosion is a bronze or aluminum propeller on a stainless steel shaft, but metal struts, rudders, rudder fittings, outboards, and stern drives are also at risk.

22. COUNTERACTING GALVANICS 1.Add a SACRIFICIAL metal. 2.THE COMMON ZINC: Comes in all sizes, shapes. READILY AVAILABLE. INEXPENSIVE. 3.FREQUENT INSPECTION for signs of destruction: greyish color, pitted, pieces broken off. 4.REPLACE IMMEDIATELY with new zincs. 5.BRIGHT zincs are those NOT RESPONDING; NOT PROTECTING THE NOBLE METAL!

23. GALVANIC ACTION **NOTE** NEVER---NEVER---NEVER LET ANYONE PAINT YOUR ZINCS. Paint provides an insulating surface that prevents the zinc from doing it’s job. In the meantime, your shafts, rudder plates and posts, etc. continue to be eaten away.

24. 244/2010 Ted Potter DCAPT/SHR THE SHAFT TRAIN

25. 1.The SHAFT TRAIN inside the boat translates the POWER of the engine to the propeller outside of the boat. 2.The shaft (power) train, except V- and Hydraulic drives consists of: a). Shaft Log b). Shaft c) Strut d.) Strut bearing e.) Propeller.

26. THE SHAFT TRAIN 1.PROPELLER: Varying sizes of PITCH, DIAMETER, CIRCUMFERENCE, LEFT or RIGHT ROTATION, SHAFT-HOLE SIZE, NUMBER OF BLADES and TYPE of METALS. 2.PITCH: Distance propeller will move ahead in ONE revolution. 3.LOCK NUT: Holds the propeller on the shaft. Probably the MOST important piece of the entire TRAIN.

27. TYPICAL STUFFING BOX

28. REVIEW QUESTIONS NO. 1 1.The condition of dry rot is usually_______ a. very slow to spread. b. eliminated by soaking affected areas with turpentine and then coating with “spar” varnish. c. first indicated by a distinctive odor. d. produced by an excessively dry environment.

29. REVIEW QUESTIONS 1.The condition of dry rot is usually_______ c. first indicated by a distinctive odor.

30. REVIEW QUESTIONS NO. 2 2. Galvanic action_____________________ a. is caused by two dissimilar metals being electrically connected and immersed, either totally or partially, in sea water b. effects ferrous materials only c. is of most concern when there are stray electrical currents in the area. d. is always located where the shaft is attached to the inboard engine.

31. REVIEW QUESTIONS 2. Galvanic action is_________________ a. is caused by two dissimilar metals in salt water, electrically connected.

32. REVIEW QUESTIONS NO. 3 3. The strut bearing ____________________ a. relies on water for lubrication. b. is stuffed with oakum and grease. c. is located inside the hull. d, is located where the shaft is attached to the engine.

33. REVIEW QUESTIONS 3. The strut bearing _________________ a. relies on water for lubrication

34. REVIEW QUESTIONS NO. 4 4. The most effective way to combat “dry rot” when it is found is to ______ a. soak the affected area with turpentine then coat with spar varnish. b. dig out the soft spots with a knife and paint the entire area c. cut out the affected wood plus some good wood. d. keep affected areas dampened with fresh water.

35. REVIEW QUESTIONS 4. The most effective way to treat “dry rot” when it is found is to_______________ c. cut out the affected wood plus some good wood.

36. REVIEW QUESTIONS NO. 5 5. A good method to combat galvanic action is to ________ a. use the same metal throughout the boat. b. electrically connect dissimilar metals immersed in sea water. c. eliminate all stray electrical currents d. add a sacrificial metal.

37. REVIEW QUESTIONS 5. A good method to combat galvanic action is to _________________ d. Add a sacrificial metal

38. REVIEW QUESTIONS NO. 6 6. What is used to keep the propeller on the shaft? a. locking ring b. a lock nut c. a slot d. a collar

39. REVIEW QUESTIONS 6. What is used to keep the propeller on the shaft? b. a lock nut

40. REVIEW QUESTIONS 7. The two types of marine growth are__ a. barnacles and moss b. oysters and grass c. worms and oysters d. vegetable and animal

41. REVIEW QUESTIONS 7. The two types of marine growth are___ d. vegetable and animal

42. REVIEW QUESTIONS NO.8 8. The primary effect of marine growth on the hull is ________________ a. to slow it’s speed b. little or none c, not well known d. negligible

43. REVIEW QUESTIONS 8. The primary effect of marine growth on the hull is________________ a. slow it’s speed

44. REVIEW QUESTIONS NO. 9 9. The proper way to store a boat is to__ a. always let the weight rest on the shoring. b. never let the weight rest on the shoring c. never shore the boat d. never cover the boat

45. REVIEW QUESTIONS 9. The proper way to store a boat is to___ b. never let the weight rest on the shoring.

46. REVIEW QUESTIONS NO. 10 10. In galvanic action, the current flows from the _____ to the ____metal. a. less noble/more noble b. more noble/less noble c. negative/positive d. positive/negative

47. REVIEW QUESTIONS 10. In galvanic action the current flows from the ____to the ____metal. a. less noble/more noble