Canadian Yachting April 2018 - 24

A SK TH E EX PER T

T im e T o S in k Z in c

B y C ra ig R itc h ie

F o r y e a r s , w e 'v e a ll u s e d z in c a n o d e s t o
o st o f u s d o n 't g iv e a se c o n d th o u g h t to o u r sa c rific ia l p r o t e c t o u r e n g in e s a n d o t h e r m e t a llic
a n o d e s - th o se c u rio u s k n o b s o f ra w m e ta l fo u n d o n p a r t s fr o m c o r r o s io n , b u t g r o w in g
o u td riv e s, sh a fts, ru d d e rs, a n d o th e r m e ta l c o m p o - e v id e n c e o f it s lo n g - t e r m t o x ic it y h a s
n e n ts th a t d a n g le u n d e r th e b o a t. W e k n o w th a t th e a n o d e s
so m e h o w re a c t in th e w a te r to p ro te c t th o se im p o rta n t m e ta l b r o u g h t z in c u n d e r t h e m ic r o s c o p e .
b its fro m c o rro d in g , a n d w e k n o w th a t e v e ry n o w a n d th e n , o v e r W it h n e w e r a lt e r n a t iv e s p r o v in g t o b e
tim e , th e y w ill d isso lv e in th e c o u rse o f d o in g th e ir jo b a n d n e e d m o r e e ffe c t iv e a n d le s s e x p e n s iv e , w h y
to b e re p la c e d . B u t th a t's a b o u t it. B e y o n d th a t, n o o n e re a lly
d o w e k e e p b u y in g t h e s t u ff?
g iv e s th e m a se c o n d th o u g h t.

M

m A Y B E w E SH O u LD .
A n o d e s a re a c tu a lly p re tty c o o l d e v ic e s. M e ta l c o rro d e s in w a te r
a s a re su lt o f n a tu ra lly o c c u rrin g e le c tro -c h e m ic a l re a c tio n s.
A n o d e s a re m a d e fro m m e ta ls th a t h a v e a p a rtic u la rly a ttra c tiv e
e le c tro -c h e m ic a l v o lta g e ra n g e , so th e se c o rro siv e re a c tio n s te n d
to c o n c e n tra te o n th e a n o d e w h ile ig n o rin g o th e r a d ja c e n t m e ta l
p a rts. It's a b it lik e c a te rin g a k id 's b irth d a y p a rty b y se rv in g c a k e
a n d b ro c c o li a t th e sa m e tim e - th e c a k e g e ts d e v o u re d w h ile
th e b ro c c o li e sc a p e s u n to u c h e d . It's a sim p le a p p ro a c h th a t
w o rk s e q u a lly w e ll o n sm a ll b o a ts, la rg e y a c h ts, c o m m e rc ia l
sh ip s, a n d sh o re lin e in sta lla tio n s su c h a s d o c k s a n d lo c k g a te s.
A n o d e s h a v e tra d itio n a lly b e e n m a d e o f zin c - to th e p o in t
th e y 're p re tty w e ll k n o w n u n iv e rsa lly a s "zin c s" ra th e r th a n b y
th e ir p ro p e r n a m e . W h ile zin c is a n e ffe c tiv e a n o d e m a te ria l,
a n d sm a ll a m o u n ts o f zin c a re e sse n tia l fo r h u m a n h e a lth , in
h ig h e r c o n c e n tra tio n s it c a n c a u se re a l p ro b le m s. P ro lo n g e d
e xp o su re to zin c h a s b e e n fo u n d to b e h ig h ly to xic to p la n ts,
in v e rte b ra te s, a n d fish , fo r e xa m p le . W o rse still, zin c a n o d e s ty p ic a lly in c lu d e so m e a m o u n t o f c a d m iu m , w h ic h h a s b e e n a sso c ia te d w ith se rio u s illn e sse s in c lu d in g k id n e y d ise a se ,
a th e ro sc le ro sis, h y p e rte n sio n , a n d c a rd io v a sc u la r d ise a se s.
F u rth e r, th e re is g ro w in g c o n c e rn th a t e xp o su re to c a d m iu m

24

C a n a d ia n Y a c h t in g

m a y b e lin k e d to im m u n e sy ste m d e fic ie n c ie s, w ith re c e n t stu d ie s re v e a lin g a sig n ific a n t c o rre la tio n b e tw e e n c a d m iu m e xp o su re a n d th e o c c u rre n c e o f d ise a se in h u m a n p o p u la tio n s.
S u c h fin d in g s h a ve in e v ita b ly ra ise d c o n c e rn s a b o u t th e c o n tin u e d u se o f zin c a n o d e s in m a rin e e n viro n m e n ts. S o u th o f th e
b o rd e r, b a n s o n th e u se o f zin c a n o d e s h a v e b e e n p ro p o se d in
C a lifo rn ia a n d M a ryla n d a fte r stu d ie s id e n tifie d h ig h le v e ls o f th e
e le m e n t in lo c a l e n viro n m e n ts lo c a te d n e a r la rg e m a rin a s. W ith
o u r sh o rte r b o a tin g se a so n , th e re so fa r h a v e n 't b e e n sp e c ific c a lls
fo r zin c b a n s h e re in C a n a d a , b u t so m e fe e l it's o n ly a m a tte r o f
tim e a s th e e v id e n c e a g a in st its u se c o n tin u e s to m o u n t.
Z IN C A L T E R N A T Iv E S
F o rtu n a te ly, zin c isn 't th e o n ly g a m e in to w n w h e n it c o m e s to
p ro te c tin g o u r b o a ts. N o n -to xic a lte rn a tiv e s e xist, sta rtin g w ith
a lu m in u m .
A lu m in u m a n o d e s h a v e n u m e ro u s a d v a n ta g e s o v e r zin c ,
sta rtin g w ith b e in g fa r m o re e ffe c tiv e . In fa c t, a lu m in u m 's su p e rio rity to zin c a s a n a n o d e m a te ria l is so o v e rw h e lm in g th a t it h a s
c o m p le te ly d isp la c e d zin c a s th e n u m b e r o n e c h o ic e o f e n g in e
m a n u fa c tu re rs w o rld w id e .

A P R IL 2 0 18



Table of Contents for the Digital Edition of Canadian Yachting April 2018

At the Helm: Look Good – Feel Great!
Gear and New Products: Nautical Fashions
Club Profile: Polish Canadian Yacht Club
Life On Board: Hogtown to Hogfish
Ask the Expert: Let’s Sink Zinc
Ask the Expert: Smelly boat? Keep the cabin fresh
Power Review: Cruisers Yachts Cantius 42
The Port Hole: Spring 2018
Travel Destination: Canary Islands and Cabo Verde
Travel Destination: How to be as Polite as a Canadian at Gulf Island Marine Park Anchorages
Sail Review: Dufour 412
Crossing the Line: Boating Bookcase
Canadian Yachting April 2018 - Welcome
Canadian Yachting April 2018 - Cover1
Canadian Yachting April 2018 - Cover2
Canadian Yachting April 2018 - 3
Canadian Yachting April 2018 - At the Helm: Look Good – Feel Great!
Canadian Yachting April 2018 - 5
Canadian Yachting April 2018 - 6
Canadian Yachting April 2018 - 7
Canadian Yachting April 2018 - 8
Canadian Yachting April 2018 - 9
Canadian Yachting April 2018 - 10
Canadian Yachting April 2018 - Gear and New Products: Nautical Fashions
Canadian Yachting April 2018 - 12
Canadian Yachting April 2018 - 13
Canadian Yachting April 2018 - 14
Canadian Yachting April 2018 - 15
Canadian Yachting April 2018 - 16
Canadian Yachting April 2018 - Club Profile: Polish Canadian Yacht Club
Canadian Yachting April 2018 - 18
Canadian Yachting April 2018 - 19
Canadian Yachting April 2018 - 20
Canadian Yachting April 2018 - 21
Canadian Yachting April 2018 - Life On Board: Hogtown to Hogfish
Canadian Yachting April 2018 - 23
Canadian Yachting April 2018 - Ask the Expert: Let’s Sink Zinc
Canadian Yachting April 2018 - 25
Canadian Yachting April 2018 - 26
Canadian Yachting April 2018 - Ask the Expert: Smelly boat? Keep the cabin fresh
Canadian Yachting April 2018 - 28
Canadian Yachting April 2018 - 29
Canadian Yachting April 2018 - Power Review: Cruisers Yachts Cantius 42
Canadian Yachting April 2018 - 31
Canadian Yachting April 2018 - 32
Canadian Yachting April 2018 - 33
Canadian Yachting April 2018 - 34
Canadian Yachting April 2018 - The Port Hole: Spring 2018
Canadian Yachting April 2018 - 36
Canadian Yachting April 2018 - 37
Canadian Yachting April 2018 - 38
Canadian Yachting April 2018 - 39
Canadian Yachting April 2018 - 40
Canadian Yachting April 2018 - 41
Canadian Yachting April 2018 - 42
Canadian Yachting April 2018 - 43
Canadian Yachting April 2018 - 44
Canadian Yachting April 2018 - 45
Canadian Yachting April 2018 - 46
Canadian Yachting April 2018 - 47
Canadian Yachting April 2018 - Travel Destination: Canary Islands and Cabo Verde
Canadian Yachting April 2018 - 49
Canadian Yachting April 2018 - 50
Canadian Yachting April 2018 - 51
Canadian Yachting April 2018 - 52
Canadian Yachting April 2018 - 53
Canadian Yachting April 2018 - 54
Canadian Yachting April 2018 - 55
Canadian Yachting April 2018 - 56
Canadian Yachting April 2018 - 57
Canadian Yachting April 2018 - Travel Destination: How to be as Polite as a Canadian at Gulf Island Marine Park Anchorages
Canadian Yachting April 2018 - 59
Canadian Yachting April 2018 - 60
Canadian Yachting April 2018 - 61
Canadian Yachting April 2018 - 62
Canadian Yachting April 2018 - 63
Canadian Yachting April 2018 - Sail Review: Dufour 412
Canadian Yachting April 2018 - 65
Canadian Yachting April 2018 - 66
Canadian Yachting April 2018 - 67
Canadian Yachting April 2018 - 68
Canadian Yachting April 2018 - 69
Canadian Yachting April 2018 - 70
Canadian Yachting April 2018 - 71
Canadian Yachting April 2018 - 72
Canadian Yachting April 2018 - 73
Canadian Yachting April 2018 - 74
Canadian Yachting April 2018 - 75
Canadian Yachting April 2018 - 76
Canadian Yachting April 2018 - 77
Canadian Yachting April 2018 - Crossing the Line: Boating Bookcase
Canadian Yachting April 2018 - Cover3
Canadian Yachting April 2018 - Cover4
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http://www.nxtbook.com/kerrwil/canadianyachting/october2016
http://www.nxtbook.com/kerrwil/canadianyachting/june2016
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http://www.nxtbook.com/kerrwil/canadianyachting/december2015
http://www.nxtbook.com/kerrwil/canadianyachting/october2015
http://www.nxtbook.com/kerrwil/canadianyachting/june2015
http://www.nxtbook.com/kerrwil/canadianyachting/May2015
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