Get­ting rid of cabin con­den­sa­tion for good

SAIL - - Contents - By Dick Everitt

A Droplets of con­den­sa­tion form when wa­ter va­por con­denses on colder sur­faces. Warm, wet ar­eas like gal­leys and show­ers need open­ing ports, hatches or big ven­ti­la­tors to let the moist air out. An of­ten over­looked source of mois­ture is the burn­ing of hy­dro­car­bon fu­els. The old say­ing that “burn­ing a gal­lon of gas pro­duces a gal­lon of wa­ter” still holds true.

B Our bod­ies also pro­duce a lot of hot, wet air. This con­denses on cold win­dow panes or frames, and then drips down on to bunks, etc... It can even pass through open-cell foam mat­tresses to meet the air un­der­neath

C that’s cooled by the sea or, in cer­tain cases, wa­ter tanks.

D Th­ese wet, dark ar­eas are ideal places for mold to form.

E Leav­ing wet gear in the main cabin also in­creases the mois­ture con­tent of the air.

F Some boats have a handrail-cum-drip tray un­der win­dows to catch any droplets. screens G Con­den­sa­tion can drip down on aft-slop­ing onto in­stru­ments. wind­ing

H Warm have been air de-mis­ters used on up-mar­ket and double-glaz- boats.

I shav­ing Low-tech foam so­lu­tions or a cut potato. in­clude rub­bing on

J Cat lit­ter in an old sock may help dry out the area.

K Adding a thick bar­rier layer of closed­cell foam un­der a mat­tress can re­duce con­den­sa­tion and mold prob­lems.

L Special non-rust­ing spring mat­tresses can be cus­tom-made to cre­ate masses of space for ven­ti­la­tion.

M Var­i­ous slat­ted de­vices are also avail­able, which can be put un­der mat­tresses to in­crease air flow. Dick Everitt has sailed thou­sands of miles in var­i­ous parts of the world. He has been an il­lus­tra­tor, jour­nal­ist and en­gi­neer for more than 40 years


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