Dave Gerr - Boat Mechanical Systems Handbook-How to Design, Install, and Recognize Proper Systems in Boats

covered at times with bilge water. The CFR makes allowances for this. You can see in Figure 16-5 that a low, shallow bilge compa ...

area for natural or passive ventilation of a gasoline-engine compartment (or for fuel or portable-engine compartments that requi ...

197 sq. in. (1,260 cm^2 ) as bare-minimum vent area with a proper area (allowing for exten- sive ducting) of 237 sq. in. (1,525 ...

Almost any boat with an engine (outboards excluded) and virtually every boat with mechanical systems, such as refrigeration or a ...

This strength requirement means that a proper seacock should have a flanged body to mount against the inside of the hull—not sim ...

PART SIX: PLUMBING SYSTEMS WITH NOTES ON FIRE SUPPRESSION allow two useful things: flushing the engine- cooling system or drawin ...

Chapter 17:Sea Suction looking at Figure 18-3.) In practice most sail- boats didn’t follow this particular require- ment As of 2 ...

that seacocks be fitted on all through-hulls from 12 inches (30 cm) above the waterline and down, or from a height of^1 / 60 th ...

Chapter 17:Sea Suction You can see how these self-cleaning sea strainers are configured in Figure 17-10. Note that this schemati ...

(locate the through-hull at least 2 feet or 0 .6 m below the waterline). Even this can’t absolutely ensure that these problems w ...

cruiser. It provides all the advantages listed previously. Note the plastic (Marelon) sea- cocks. I often use these in metal yac ...

PART SIX: PLUMBING SYSTEMS WITH NOTES ON FIRE SUPPRESSION Figure 17-14. Sea chest section ...

Chapter 17:Sea Suction Discharge Aft of Intake Speaking of impurities, do not forget that the discharge lines—particularly for t ...

CHAPTER 18 Bilge Systems It’s unquestionable that the first job of any boat hull is to keep water out. Failure in this will resu ...

for some large-diaphragm pumps, which we’ll look at in a bit.) The open area of the grating or mesh in the strum box should be a ...

on the front side of the bulkhead that can be operated by a reach rod on deck, or aft of the bulkhead if the valve is easily acc ...

F igure 18-2 . B ilge p ip ing and f ire ma in ...

Beam: 14 .75 ft. (4.5 m) Molded depth: 7 .58 ft. (2.31 m) Length of longest compartment: 17 .6 ft. (5.36 m) Displacement: 25 .2 ...

to me. We can check the minimum required pump capacity against the approximate flooding rate from a rather small hole in the hul ...

or lpm (liters per minute). Unfortunately, that shiny new pump rated at, say, 1,500 gph (5,700 lph) in the catalog will seldom d ...