Hunter 50 - Page 192

A
Aback
:
desc
ri
bes
a
sa
il wh
e
n th
e
win
d
s
trik
es
it
o
n th
e
l
ee
s
i
de
.
Abaft
:
t
o
w
a
r
ds
th
e
boa
t
’s
s
t
e
rn.
A
bea
m
:
at ri
g
ht an
g
les to the center-line o
f
the boat.
Aft
:
a
t
o
r n
ea
r t
he
s
t
e
rn.
Amidships: the center o
f
the boat, athwartships and
f
ore
a
n
d
af
t
.
Anti-foulin
g:
a po
i
sonous pa
i
nt compoun
d
use
d
to pro-
tect the underwater part o
f
a hull
f
rom marine
g
rowths.
Apparent wind: The direction and speed o
f
the wind
f
elt
b
y
the crew. It is a combination of true wind and that
c
reated b
y
the movement o
f
the boat.
Astern: behind the boat; to
g
o astern is to drive the
boa
t
i
n r
e
v
e
r
se
.
Athwartshi
p
s
:
at ri
g
ht an
g
les to the
f
ore and a
f
t line o
f
th
e
boa
t.
B
B
ac
k:
when a wind backs, it shifts anticlockwise.
B
ac
k
a
sa
il: t
o
s
h
ee
t it t
o
win
d
w
a
r
d
so
th
a
t th
e
win
d
f
ill
s
on the side that is normall
y
to leeward
.
Backsta
y
: a sta
y
that supports the mast from aft and
p
revents its
f
orward movement.
Ballast: extra wei
g
ht, usuall
y
lead or iron, placed low in
t
h
e
b
oat or externa
lly
on t
h
e
k
ee
l
to prov
id
e sta
bili
t
y.
B
a
ll
ast
k
ee
l:
a
m
ass
of
ba
ll
as
t
bo
lt
ed
t
o
th
e
k
ee
l t
o
increase stabilit
y
and prevent a keel boat
f
rom capsiz-
i
n
g
.
B
atten
:
a li
g
ht, flexible strip fed into a batten pocket at
the leech o
f
the sail to support the roach.
Beam
:
1, the maximum breadth of a boat; 2, a trans-
verse member that su
pp
orts the deck; 3, on the beam
means that an ob
j
ect is at ri
g
ht an
g
les to the centerline.
Bear awa
y
: to steer the boat awa
y
from the wind
.
the direction of an ob
j
ect from an observer, measured
in de
g
rees true or ma
g
netic.
Beat: to sail a zi
g
za
g
course towards the wind, close-
hauled
o
n
al
t
e
rn
a
t
e
t
acks
.
Bela
y:
to make
f
ast a rope around a cleat, usuall
y
with
a fi
g
ure-of-ei
g
ht knot.
B
en
d:
1, to secure a sail to a spar before hoistin
g
; 2, to
moor a boat; 3, a sleepin
g
place on board
.
Bi
g
ht
:
a bend or loop in a rope.
Bilg
e: t
h
e
l
ower, roun
d
p
art
i
ns
id
e t
h
e
h
u
ll
w
h
ere t
h
e
w
a
t
e
r
co
ll
ec
t
s
.
Block: a pulle
y
in a wooden or plastic case, consist-
in
g
of a sheave around which a rope runs. It is used to
c
han
g
e the direction o
f
pull.
Boot-toppin
g
:
a
narrow colored stripe painted between
t
h
e
b
ottom
p
a
i
nt an
d
t
h
e to
p
s
id
e ename
l.
Bottlescrew
:
see Ri
gg
in
g
screw.
Broach
:
when a boat runnin
g
downwind slews broad-
side to the wind and heels dan
g
erousl
y
. It is caused b
y
heav
y
followin
g
seas or helmsman’s error.
Broad reach
:
the point o
f
sailin
g
between a beam reach
and a run, when the wind blows over a quarter
.
B
u
lkh
ea
d:
a partition wall in a boat normall
y
fitted
athwartships
C
Caulk
:
to ma
k
e t
h
e seams
b
etween woo
d
en
pl
an
k
s
waterti
g
ht b
y
f
illin
g
with cotton, oakum or a compound.
Cavitation
:
the
f
ormation o
f
a vacuum around a propel-
ler, causin
g
a loss in efficienc
y
.
Center-board
:
a board lowered throu
g
h a slot in the
k
eel to reduce leewa
y.
Center-line:
ce
nt
e
r
o
f th
e
boa
t in
a
f
o
r
e
a
n
d
a
ft lin
e
.
Center of effort
(
COE
):
the point at which all the
f
orces
actin
g
on the sails are concentrated
.
Center of lateral resistance
(
CLR
):
t
he
u
n
de
rw
a
t
e
r
c
enter o
f
pressure about which a boat pivots when
c
han
g
in
g
course.
Chain
p
awl
:
a s
h
ort
l
u
g
w
hi
c
h
d
rops
i
nto a toot
h
e
d
rac
k
to prevent the anchor chain runnin
g
back
.
Chain
p
late
:
a metal plate bolted to the boat to which
t
h
e s
h
rou
d
s or
b
ac
k
sta
y
s are attac
h
e
d.
Chart datum
:
r
efe
r
e
n
ce
l
e
v
e
l
o
n
a
c
h
a
rt
be
l
o
w whi
c
h
the tide is unlikel
y
to
f
all.
S
oundin
g
s are
g
iven below
ch
art
d
atum.
Th
e
d
atum
l
eve
l
var
i
es accor
di
n
g
to coun-
tr
y
and area
.
Chine: th
e
lin
e
wh
e
r
e
th
e
bo
tt
o
m
of
th
e
h
u
ll m
ee
t
s
th
e
s
id
e at an an
gl
e
.
Cleat
:
a wooden, metal or plastic
f
ittin
g
around which
rope is secured.
Clevis
p
in
:
a
l
oc
ki
n
g
p
i
n t
h
rou
gh
w
hi
c
h
a sp
li
t r
i
n
g
i
s
passed to prevent accidental withdraw
.
Clew
:
the a
f
ter, lower center o
f
a sail where the
f
oot and
leech
m
ee
t
.
Close-hauled: the point o
f
sailin
g
closest to the wind;
see
a
l
so
bea
t.
Close reach
:
the point of sailin
g
between close-hauled
and a beam reach, when the wind blows
f
orward o
f
the
bea
m.
Close-winded
:
d
escr
ib
es a
b
oat a
bl
e to sa
il
ver
y
c
l
ose
t
o
th
e
win
d
.
Coamin
g:
the raised structure surroundin
g
a hatch,
c
oc
k
p
i
t, etc., w
hi
c
h
prevents water enter
i
n
g.
Cotter
p
in
:
so
f
t, metal pin
f
olded back on itsel
f
to
f
orm
an
eye.
Course
:
t
h
e
di
rect
i
on
i
n w
hi
c
h
a vesse
l
i
s steere
d
, usu-
all
y
g
iven in de
g
rees; true, ma
g
netic or compass
.
Crin
g
le
:
1, a rope loop,
f
ound at either end o
f
a line o
f
reef points; 2, an e
y
e in a sail
.
D
Hu
nt
e
r
50
• Glossar
y
1
5
.
2