Sink in Forward Cabin

I found a small sink for the head area.  It's a 12 inch round copper vessel style that mounts on the top of the cabinet. ( The photos below are from the dealer brochure )  This style solves the problem of drain line interference with the air conditioner compressor that is mounted directly below.  The sink drain line can now be routed alongside the compressor and aft to T into the galley sink drain.  One 1.5 inch thru hull and seacock will serve both the galley and the head sink drains.

The faucet hot and cold water mixing valve will connect to a matching side spray fixture that will serve as a hand held shower.

The water maker has an output line to sample the end product.  This circuit cannot be valved so I will look for a fountain spigot to mount over the sink. The brine reject water line will T into the sink drain below the counter.

Change Orders

Change order no 420 (roughly): 
Scratch the sink in the head; there is no place to put it. As I drew it up, the bottom of the sink would be right on top of the air conditioner. I could move it to the starboard side countertop but that wipes out a bank of 3 drawers. In hindsight I didn’t need it anyway....the galley sink is only 5 feet away. So, we scratch the sink, which means we don't need the sink drain thru-hull. Now we have an extra sink and seacock.

However, the hot and cold water lines have already been pulled to that location and we need a solution to the air conditioner pan drain issue. Running it into the bilge is not a good option. The new plan is to install a hand held shower and build a small sump pan with pump. The A/C pan can drain into the shower sump.  A self-priming waste water pump will send shower gray water and AC water over the side at the transom.

Marine Sanitation - Keeping it Simple

The Lavac head will be mounted on the port side of the forward cabin space instead of directly in front of the sail locker per pre-Ike layout. 

The new holding tank is larger at 13 gallons and relocated from where it was situated before Ike below the sail locker deck just forward of the head to high on the port side above the waterline in the same sail locker space. The holding tank is plumbed with 3 lines on the top, the inlet from the head, the deck pump-out tube and the vent line. There is no option (no Y valve) to flush direct overboard; the head flushes only to the holding tank. However, as allowed by law once the vessel is 3 miles or more offshore, the overboard discharge from the bottom of the holding tank plumbs straight down to the overboard discharge seacock next to the head on the port side.

As discussed in an earlier entry on this same topic this is a fresh water only flush system thus eliminating the need for a raw water intake and associated anti-siphon loop and vent valve. There is no anti-siphon/vent plumbing needed on the discharge side either because the holding tank is above the water line.  And of course the gravity discharge means no macerator or discharge pump.

The Fresh Flush device provides one gallon per flush of non-pressurized fresh water and is the central  component in the system. If the water maker konks out and fresh water conservation becomes an issue there is a salt water line in the compartment that can be used to fill the bowl.   It  can't get any simpler.

     

New Water Tanks

The new water tanks are 2 inches shorter than standard in order to get the extra headroom in the main cabin. Miller did a nice job but I had to take them back to have inspection ports cut.