Home Introduction Expertise and innovative products that are based soundly on the underlying science. News New articles, ideas, products and relevant information. Principles Peer-reviewed science and the NFPA780 standard form the basis. Sideflashes Control of these is the fundamental problem. Products New and innovative to cover all parts of the system. Contact About us Specialty Innovative grounding techniques are the key. The lightning system Now a marine system can look just like one on a building. Founder Dr. Ewen M. Thomson comes from Aotearoa and 20+ years in academia. Collaboration Builders and designers can best implement these ideas. Contact Information Air terminals Function, shape and implementation Articles Mainly print accounts of relevant topics. Boat types Different boats have different needs. Catamarans With two hulls these are struck twice as often. Grounding concepts Technical treatise on some relevant principles. Grounding guide How to use Siedarc electrodes in your grounding system. History Benjamin Franklin started it all. Lightning Discharge processes affecting boat strikes. Problems Sensitive electronics, crew members, high volatge and sideflashes. Solutions Effective grounding and external conductors Systems Gallery Anotated images of systems already built and on the drawing board. Design & build Basic procedures for developing your own system. Ask us We can help. Products Air terminals Fixed rods, ratchet-mount and flush-mount. Connections Mast, through-deck, bimetallic and main-sized conductors. Grounding Strips Tinned copper immersed strips. SiedarcTM Electrodes Add some lightning rods near the water. Prices Component part numbers and prices. Contact Consulting Expert witness & design. Consultant resume.