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HULL/DECKING/SUPERSTRUCTURE
MACHINERY
STEEL
ALUMINUM
ENGINES
ELECTRICAL
GENERATORS
CAPAC Systems - Internet Notes
Troubleshooting Chronic Battery Problems - David Pascoe
BATTERIES
Gauge for Your Batteries-Advertisement
Checklist - Good Starting point/reference
GENERAL_OVERVIEW
Metal Boats
Painting
AboutMarineAluminum
Alignment of Drive Train - Does it matter?
Alignment of Drive Train - Does it matter(Part 2)?
Maintenance_& TroubleShooting
The Case for Welded Aluminum Boats
Anodes/Zincs- Hull Protection--Internet Notes
Does your CAPAC unit look like this? Better read up!
Pitting_Welding_Etc - Internet Notes
Roamers - Metal Boat - Issues - Internet Notes
The Steel Alternative - Various Articles
Save the Steel - Excellent Guide to Protecting Steel hulls- Article
Steel Vs Aluminum - Which is Stronger?
NAVIGATION EQUIPMENT
Mounting a Compass on a Steel Hull
Need to fix that old Onan Model "CCK" generator? Click here for parts.
Why  Aluminum ?- Insights from mega-yacht builder Palmer Johnson
Here's a Chris Craft worker welding your boat - is he sad or glad today?
Aluminum Revolution - The Future of Aluminum Boats
CAPAC - Call  Electrocatalytic, Inc (908)851-2277
Metalize - Hull Protection--Better than paint?
Metalize - Hull Protection--Better than paint?
CAPAC Systems - Update: CCR Briefing (VOL 1, No.1)
Marine Services - Corrosion & electrical specialists
Why  Aluminum II?- More analysis from Wiininghoff Boats, Inc.
Insulating Steel hull interiors - Internet Notes.
Fixing pinholes in Steel hulls-Internet Notes
GO HERE FOR GOOD ADVICE
THRU-HULLS
Water-tight fittings
Tanks & standpipes
Dielectric Waterways & Insulated Couplings*
Clearflow Dielectric Waterways
Insulated Couplings (These go under your raw water strainers)
* Check yours today - no kidding!
First test: Grab & "shake" your raw water strainers (make sure you have a wooden plug handy) - still on?:
Test #2: Screw off your raw water strainers; examine standpipe threads, and insides of your couplings (OEM-Robert Vallett). 
Looks good - amazing!
Not so good; "re-thread"standpipe with appropriate sized die - get new couplers (see above sources).