October 1st, 2011
I’ve added a few new images of the battery compartment today. At this point, I’ve actually already glassed in the main battery compartment pieces which will form the battery compartment (in the lower quadrant), as well as the galley/nav-station stowage lockers (the upper and outboard areas). Likely I won’t be adding much more to these areas in the too near future, because I am shifting my focus to the exterior of the boat for the time being, however it’s great to have the basic framework in.
Another good thing about waiting to move too much more forward on this area is that it will give me more time to think about how I exactly what this to all come together. The construction of the battery compartment face and surrounding lockers will set the tone of stowage for the settee, galley and nav-station. The reason for this is because the two lockers that are already framed out, are accessed by reaching over, around and under the galley and nav-station counters. This means however I decide to fully flesh out these lockers, I will need to consider how the whole system works together.
- Batteries are heavy and need to be secured carefully so that they will not go adrift and capsize in severe weather. They also must be well ventilated, as they may give off hydrogen gas, which is highly explosive, while being recharged. (Desirable and Undesirable Characteristics of Offshore Yachts, p. 125)
- …batteries should be checked daily for water level, as little crawling about as possible should be required. (From a Bare Hull, p. 154)
- The batteries need secure stowage low in the boat to keep the center of gravity down, but high enough to not get flooded with bilge water. (Cruising Handbook, p. 169)
- Batteries perform best in a cool environment and will be harmed by high temperatures, so they should not be in the engine room. However, it is desirable to keep the high-current circuits as short as possible; therefore the cranking batter should be close to the starter motor and the house batteries close to any high-output alternator and an inverter (if fitted). (Cruising Handbook, p. 169)
- Wet-type batteries must be accessible for maintenance. (Cruising Handbook, p. 169)
- All batteries must be in well-ventilated battery compartments because all can occasionally give off explosive hydrogen gas. This includes gel-cell and AGM batteries….In certain circumstances this can result in an explosion. (Cruising Handbook, p. 169)
- Battery Straps (4)
- Bomar – Hatch Model #G7812-WT (2) ($58 x 2 = $116) (?)
- Eye Bolts (8) (for battery strap down point)
- Stainless Steel Trays (4) (?)