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Nautical Terms
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Romeo
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radar
arch
-
An
arch
to
mount
the
radar,
usually
at
the
stern
of
the
boat. |
|
radar
reflector
-
An
object
designed
to
increase
the
radio
reflectivity
of
a
boat
so
that
it
is
more
visible
on
radar.
Many
small
boats
are
made
with
fiberglass
and
other
materials
that
do
not
reflect
radar
very
well
on
their
own. |
|
radar
-
Radio
detection
and
ranging.
An
electronic
instrument
that
uses
radio
waves
to
find
the
distance
and
location
of
other
objects.
Used
to
avoid
collisions,
particularly
in
times
of
poor
visibility. |
|
radio
beacon
-
A
navigational
aid
that
emits
radio
waves
for
navigational
purposes.
The
radio
beacon's
position
is
known
and
the
direction
of
the
radiobeacon
can
be
determined
by
using
a
radio
direction
finder. |
|
radio
-
An
instrument
that
uses
radio
waves
to
communicate
with
other
vessels.
VHF
very
high
frequency
-
radios
are
common
for
marine
use,
but
are
limited
in
range.
Single
Side
Band
SSB
-
radios
have
longer
ranges. |
|
radiowaves
-
Invisible
waves
in
the
electromagnetic
spectrum
that
are
used
to
communicate
(radio)
-
and
navigate
(radar). |
|
raft
-
A
small
flat
boat,
usually
inflatable. |
|
rail
-
The
edge
of
a
boat's
deck. |
|
rake
-
A
measurement
of
the
top
of
the
mast's
tilt
toward
the
bow
or
the
stern. |
|
ratlines
-
Small
lines
tied
between
the
shrouds
to
use
as
a
ladder
when
going
aloft. |
|
RDF
-
Radio
Direction
Finder.
An
instrument
that
can
determine
the
direction
that
a
radio
transmission
is
coming
from.
The
RDF
is
used
with
a
radio
beacon
to
find
a
radio
bearing
to
help
determine
the
vessel's
position. |
|
reaching
-
Any
point
of
sail
with
the
wind
coming
from
the
side
of
the
boat.
If
the
wind
is
coming
from
directly
over
the
side,
it
is
a
beam
reach.
If
the
boat
is
pointed
with
its
bow
more
directly
into
the
wind
it
is
a
close
reach.
If
the
wind
is
coming
from
over
the
quarter,
it
is
called
a
broad
reach. |
|
reciprocal
-
A
bearing
180°
from
the
other.
A
direction
directly
opposite
the
original
direction. |
|
red
buoy
-
A
nun
buoy.
A
conical
buoybuoy
with
a
pointed
top,
painted
red,
and
having
an
even
number,
used
in
the
United
States
for
navigational
aids.
At
night
they
may
have
a
red
light.
These
buoys
should
be
kept
on
the
right
side
of
the
boat
when
returning
from
a
larger
body
of
water
to
a
smaller
one
such
as
a
marina.
Can
buoys
are
used
on
the
opposite
side
of
the
channel.
Also
see
green
and
red
daymarks. |
|
reef
cringles
-
Reinforced
cringles
in
the
sail
designed
to
hold
the
reefing
lines
when
reefing
the
sail. |
|
reef
knot
-
Also
known
as
the
square
knot.
This
knot
is
an
unreliable
knot
used
to
loosely
tie
lines
around
the
bundles
of
sail
that
are
not
in
use
after
reefing. |
|
reef
points
-
1
-
Points
where
lines
have
been
attached
to
tie
the
extra
sail
out
of
the
way
after
reefing.
2
-
A
line
of
rock
and
coral
near
the
surface
of
the
water. |
|
reefing
lines
-
Lines
used
to
pull
the
reef
in
the
sail.
The
reef
line
will
pass
through
reef
cringles,
which
will
become
the
new
tack
and
clew
of
the
reefed
sail. |
|
reeve
-
Leeding
a
line
through
a
block
or
other
object. |
|
relative
bearing
-
A
bearing
relative
to
the
boat
or
another
object,
rather
than
a
compass
direction. |
|
rhumb
line
-
A
line
that
passes
through
all
meridians
at
the
same
angle.
When
drawn
on
a
Mercator
chart,
the
rhumb
line
is
a
straight
line.
However
the
Mercator
chart
is
a
distortion
of
a
round
globe
on
a
flat
surface,
so
the
rhumb
line
will
be
a
longer
course
than
a
great
circle
route. |
|
rig
-
A
combination
of
sails
and
spars. |
|
roach
-
1
-
A
curve
out
from
the
aft
edge
leech
-
of
a
sail.
Battens
are
sometimes
used
to
help
support
and
stiffen
the
roach.
2
-
Disgusting
little
bug
found
in
poorly
maintain
boats
and
almost
any
home
in
Florida.
3
-
No
Cheech
&
Chung
jokes
found
here. |
|
roller
furling
-
A
method
of
storing
a
sail
usually
by
rolling
the
jib
around
the
headstay
or
the
mainsail
around
the
boom
or
on
the
mast. |
|
roller
reefing
-
A
system
of
reefing
a
sail
by
partially
furling
it.
Roller
furling
systems
are
not
necessarily
designed
to
support
roller
reefing. |
|
rope
-
1
-
Traditionally
a
line
must
be
over
1
inch
in
size
to
be
called
a
rope.
2
-
In
Naval
terms,
a
rope
is
a
steel
cable
casing
with
a
synthetic
or
natural
fiber
core. |
|
row
-
A
method
of
moving
a
boat
with
oars.
The
person
rowing
the
boat
faces
backwards,
bringing
the
blade
of
the
oars
out
of
the
water
and
toward
the
bowbow
of
the
boat.
They
then
pull
the
oars
through
the
water
toward
the
stern
of
the
boat,
moving
the
boat
forward. |
|
rowboat
-
A
small
boat
designed
to
be
rowed
by
use
of
its
oars.
Some
dinghys
are
rowboats. |
|
rudder
post
-
The
post
that
the
rudder
is
attached
to.
The
wheel
or
tiller
is
connected
to
the
rudder
post. |
|
Rules
of
the
Road
-
The
rules
| | | | | | |
