The mechanical and electrical systems that determine whether a cruising boat is comfortable and self-sufficient or a recurring source of problems. These guides cover how things work, how to select and size them, and how to keep them running.
How reverse osmosis works, how to size a system for your daily needs, the brands worth the money (Spectra, Katadyn, Rainman), membrane maintenance, pickling, and what actually kills a membrane.
Read guide →Build your energy budget before you size anything. Solar panel selection, MPPT vs PWM controllers, wind generators and their noise problem, tow generators, and how to integrate it all with a Victron monitor.
Read guide →Why boat fridges consume more power than everything else, the case for insulation over a better compressor, 12V compressor vs holding plate systems, the freezer trade-off, and how to calibrate what you actually have.
Read guide →No-discharge zones and the 3-mile rule, manual vs electric vs composting heads, holding tank sizing and Y-valve configuration, the hose that actually causes odor, and how offshore discharge works in practice.
Read guide →12V compressor, holding plate, or water-cooled — why the choice depends on your cruising latitude, how insulation is the real variable, and which brands (Isotherm, Vitrifrigo, Frigoboat) hold up at sea.
Read guide →Why a diesel heater is essential for cold-water sailing, the difference between forced-air and hydronic systems, installation requirements, CO safety, and annual maintenance that prevents error codes.
Read guide →The solenoid valve is not optional. Why LPG systems require sealed vented lockers, rated hose, and proper regulators — and how to manage fitting differences when crossing the Atlantic.
Read guide →The diesel bug is real and it will strand you. How to prevent microbial contamination with Biobor JF, when and how to polish fuel, Racor filter sizing, and safe jerry can practices for offshore passages.
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