Canadian Yachting December 2019 - 8

Fi g ur e 5. Si d e b y Si d e Di git al C h art
a n d D e pt h I nf or m ati o n.
Fi g ur e 3. N a vi g ati o n Ai d s a n d AI S
v e s s el s i d e ntifi e d.

a n c h or a g e all o ws t h e cr uis er t o s el e ct
t h e b est l o c ati o n t o e ns ur e a s oli d h ol d
f or t h e a n c h or a n d t h at l e a ds t o a b ett er
ni g ht's sl e e p. I n a d diti o n, wit h f or w ar d
l o o ki n g s o n ar, b o at ers c a n s e e h az ar ds
u n d er t h e s urf a c e s u c h as d e a d h e a ds,
s u b m er g e d o bj e cts a n d f ast risi n g b ot t o ms. M or e o n f or w ar d l o o ki n g s o n ar
l at er.
As a cr uisi n g s ail or, I h a v e c o m e t o
r el y o n m y si d e- b y-si d e dis pl a y of c h art
a n d b ott o m q u alit y w h e n I a m a n c h or i n g. I c a n s e e t h e d e pt h c o nt o ur, a ct u al
d e pt h a n d q u alit y of t h e b ott o m - all i n
r e al ti m e.
W H A T I S C HI R P ?
O n e bit of t e c h n ol o g y t h at h as i m pr o v e d
t h e q u alit y of d e pt h i nf or m ati o n is
C HI R P t e c h n ol o g y. Tr a diti o n al s o n ars
pr o d u c e a "t o n e b urst" e n er g y p uls e.
W hil e it is hi g h i n p o w er it is s h ort i n
d ur ati o n - us u all y i n t h e 5 0 or 2 0 0 k Hz
r a n g e. D u e t o t his s h ort d ur ati o n, t h e
s o n ar t e n ds t o li mit t h e r a n g e, r es ol uti o n
a n d w h at t ar g ets c a n b e d et e ct e d i n t h e
w at er c ol u m n.
C HI R P st a n ds f or C o m pr ess e d Hi g hI nt e nsit y R a di at e d P uls e a n d s e n ds hi g h
p uls e e n er g y i nt o t h e w at er c ol u m n. It
d o es t his t o g e n er at e i m a g es usi n g a f ull
r a n g e of fr e q u e n ci es. C HI R P e n h a n c es
b ott o m tr a c ki n g at d e e p er d e pt hs a n d at a
hi g h er s p e e d. T h at is w h at m a k es C HI R P

8

C a n a di a n Y a c h ti n g

Fi g ur e 4. R a y m ari n e A xi o m wit h
Li g ht H o u s e 3. 6 O S a n d D JI M a vi c
Pr o Dr o n e

t e c h n ol o g y of v al u e t o c o ast al cr uisi n g as
w ell as fis hi n g.
Alt h o u g h pri m aril y i nt e n d e d t o
i m pr o v e t h e i m a g es of fis hi n g t ar g ets, t h e
C HI R P t e c h n ol o g y is i n c or p or at e d i nt o
d e pt h pr o d u cts fr o m F ur u n o ( Tr u E c h o),
Si mr a d ( S 5 1 0 0), G ar mi n ( Cl e ar V u) a n d
R a y m ari n e ( D o w n Visi o n) a n d pr o vi d e
i m pr o v e d d e pt h i nf or m ati o n b y usi n g a
pr e cis e s w e e p p att er n of m a n y fr e q u e n ci es (i. e., 2 8- 6 0 k Hz or 1 3 0- 2 1 0 k Hz).
T h e l o n g er p uls e is r e q uir e d t o b e a bl e t o
s w e e p t hr o u g h all of t h e fr e q u e n ci es.
C HI R P r e a d y tr a ns d u c ers, s u c h as
Air M ar, h a v e b a n d wi dt h at hi g h, m e di u m
a n d l o w fr e q u e n ci es. ( Fi g ur e 6)

F O R W A R D L O O KI N G
S O N A R ( F L S)
For w ar d L o o ki n g S o n ar is i nt e n d e d t o
e n h a n c e t h e v ess el's s af ety i n u n c h art e d
w at ers a n d r e m ot e ar e as by s c a n ni n g a n d
dis pl ayi n g t h e s e a b e d i n fr o nt of t h e v ess el.
I str u g gl e d wit h h o w t o a p pr o a c h t his s e cti o n fr o m a cr uisi n g - r at h er t h a n t h at of a
fis hi n g - p oi nt of vi e w. I t ur n e d t o o n e of
my g o-t o s o ur c es - Att ai n a bl e A dv e nt ur e
Cr uisi n g ( M or g a ns Cl o u d. c o m).
" T h e E c h o Pil ot h as m a d e a h u g e diff er e n c e t o o ur a bilit y t o cr uis e s af el y i n
t h e hi g h l atit u d es. It is n't n e c ess ar y,
h o w e v er, t o g o t o t h e hi g h l atit u d es t o
g et g o o d us e fr o m a f or w ar d s c a n s o n ar:
We us e it all t h e ti m e, e v e n i n w ell-

D E C E M B E R 2 01 9
http://www.morganscloud.com
Canadian Yachting December 2019

Table of Contents for the Digital Edition of Canadian Yachting December 2019
