Resources
Field notes.
Practical guidance on specifying and living with marine and mobile power systems.
22 June 2026
DC-DC Charging for Overland Vehicles
Why a DC-DC charger beats a voltage-sensitive relay for charging an auxiliary battery from a modern smart alternator, and how to specify one for an overland build.
22 June 2026
NMEA 2000 monitoring: one screen for your whole vessel
What NMEA 2000 is, how digital switching and centralised monitoring work, and why one screen for your whole vessel beats scattered gauges and switch panels.
22 June 2026
Solar, wind or alternator: power production at anchor
A practical guide to solar, wind and alternator charging at anchor for cruisers, comparing the three power sources and how they work together on a marine DC system.
22 June 2026
How to size a lithium house bank for a cruising catamaran
A practical method for sizing a lithium (LFP) house bank on a cruising catamaran: estimate daily loads, choose days of autonomy, and add charging headroom.
22 June 2026
Watermakers explained: choosing reverse-osmosis desalination
How marine and overland watermakers work, what the Clark Pump energy-recovery concept does, and how to size a reverse-osmosis system by crew and usage.