'''Marinisation''' (also '''marinization''') is design, redesign, or testing of products for use in a marine environment.<ref>{{Cite web |title=Marinisation |url=https://www.marinepanservice.com/en/glossario/marinizzazione |access-date=2022-12-05 |website=www.marinepanservice.com}}</ref> Most commonly, it refers to use and long-term survival in harsh, highly corrosive salt water conditions.<ref>{{Cite book |last=Petersen |first=E. L. |url=https://books.google.com/books?id=mGl_AgAAQBAJ |title=1999 European Wind Energy Conference: Wind Energy for the Next Millennium |date=2014-01-02 |publisher=Routledge |isbn=978-1-134-27358-4 |pages=289 |language=en}}</ref> Marinisation is done by many manufacturing industries worldwide including many military organisations, especially navies.

In some instances, cost is not a guiding force, and items may be designed from scratch with entirely non-corrosive components engineered and assembled to resist the effects of vibration and constantly changing attitude. In others, particularly in "marinising" an existing product that was not designed specifically for a marine environment for sale in the public marketplace, a balance must be found between the competing criteria.

There are three main factors that need to be considered for a product to be truly marinised. * Resistance to corrosion.<ref>{{Cite web |last=IQ |first=Oil & Gas |date=2011-08-31 |title=Corrosion: The Deep And Ultra-Deepwater Problem |url=https://www.oilandgasiq.com/integrity-hse-maintenance/articles/corrosion-the-deep-and-ultra-deepwater-problem |access-date=2022-12-05 |website=Oil & Gas IQ |language=en}}</ref> * Resistance to vibration. * Ability to function properly in conditions of constantly changing attitude (an object's ''orientation'' about its center of gravity).

==Examples== ===Metals=== Marinised metals include some of the following:

* Non-corrosive alloys that resist or are impervious to salt-water corrosion, e.g. 316 marine grade stainless steel; brass (an alloy of copper and zinc), or bronze (which contains copper with tin in place of zinc).

:The adjectival phrase "marine grade" being used when the above alloys have all impurities removed and are suitable for exposure to a marine environment. * Metals electroplated or dipped in a corrosion-resistant material, e.g. galvanised steel * Metals painted with special anti rust or anti corrosion coatings * Plastic coated metals

===Electronics=== Marinised electronics use one or more of the following protection methods. In most cases more than one method is used:

* Coating by a spray or dipping to protect from salt air and water. * Full encapsulation in some form of resin or gel. * Specialised mounting of internal parts for vibration protection. * Use of specialised corrosion resistant solder and corrosion resistant metals.

===Batteries === Marinised batteries are usually gel batteries or sealed maintenance-free batteries. Not using marinised batteries in salt water can be deadly in an enclosed environment for many reasons:

# Sulfuric acid and salt water react to generate dangerous hydrogen chloride gas, necessitating the use of valve-regulated maintenance-free sealed batteries. # The battery must have stronger plates and separators to withstand constant vibrations and impacts caused by large waves striking the hull. Plate collapse can cause short-circuits and electrical fires or explosions. # A marine battery must function at any angle due to the changing attitude of the vessel it is mounted in. Gel VRLA batteries are best for this purpose.

==See also== * Marine electronics

Category:Material protection

== References == {{Reflist}}{{Navy-stub}}