GLOSSARY OF SAILING TERMS 
 
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Member: a part of the skeleton of the 
hull, such as a stringer laminated into 
fiberglass hull to strengthen it. 
Meridian: an imaginary line encircling 
the  Earth  that  passes  through  the 
poles and cuts at right angles through 
the Equator. All lines of longitude are 
meridians. 
Mizzen: 1, the shorter, after-mast on a 
ketch or yawl; 2, the fore and aft sail 
set on this mast. 
N 
Navel  pipe:  a  metal  pipe  in  the 
foredeck  through  which  the  anchor 
chain passes to the locker below. 
Noon  Sight:  a  vessel’s  latitude  can 
be  found,  using  a  sextant,  when  a 
heavenly  body  on  the  observer’s 
meridian is at its greatest altitude. The 
sight  of  the  sun  at  noon  is  the  one 
most frequently taken. 
O 
Off the wind: with the sheets slacked 
off, not close-hauled. 
On the wind: close-hauled. 
Out haul: a rope used to pull out the 
foot of a sail. 
Overall  length  (LOA):  the  boat’s 
extreme  length,  measured  from  the 
foremost  past  of  the  bow  to  the 
aftermost part  of  the  stern, excluding 
bowspirt, self-steering gear etc. 
P 
Painter:  the  bow  line  by  which  a 
dinghy,  or  tender,  is  towed  or  made 
fast. 
Pintle: a rudder fitting with a long pin 
that  fits  into  the  gudgeon  to  form  a 
hinged pivot for the rudder.  
Pitch: 1, the  up  and  down motion of 
the bows of a boat plunging over the 
waves;  2,  the  angle  of  the  propeller 
blades. 
Point of  sailing:  the different angles 
from which a boat may sail; the boat’s 
course relative to the direction of  the 
wind. 
Port:  the  left-hand  side  of  the  boat, 
looking forward (opp. of starboard). 
Port  tack:  a  boat  is  on  a  port  tack 
when  the  wind  strikes  the  port  side 
first  and  the  mainsail  is  out  to 
starboard.  A  boat  on  the  port  tack 
gives  way  to  a  boat  on  a  starboard 
tack. 
Position line/ Line of position: a line 
drawn on a chart, as a result of taking 
a  bearing,  along  which  the  boat’s 
position  must  be  i.e.  Two  position 
lines give a fix. 
Pulpit: a metal guard rail fitted at the 
bows  of  a  boat  to  provide  safety  for 
the crew. 
Pushpit:  a  metal  guard  rail  fitted  at 
the stern. 
Q 
Quarter:  the  portion  of  the  boat 
midway  between  the  stern  and  the 
beam; on the quarter means about 45 
degrees abaft the beam. 
R 
Rake: the fore and aft deviation from 
the  perpendicular  of  a  mast  or  other 
feature of a boat. 
Range: 1, see transit; 2, of tides, the 
difference  between  the  high  and  low 
water levels of a tide; 3, the distance 
at which a light can be seen. 
Rating:  a  method  of  measuring 
certain  dimensions  of  a  yacht  to 
enable  it  to  take  part  in  handicap 
races. 
Reach:  to  sail  with  the  wind 
approximately on the beam; all sailing 
points  between  running  and  close-
hauled. 
Reef:  to  reduce  the  sail  area  by 
folding  or  rolling  surplus  material  on 
the boom or forestay. 
Reefing  pennant:  strong  line  with 
which the luff or leech cringle is pulled 
down to the boom when reefing. 
Rhumb  line:    a  line  cutting  all 
meridians  at  the  same  angle;  the 
course followed by a boat sailing in a 
fixed direction. 
Riding light  to  anchor light:  an  all-
around white light, usually hoisted on 
the forestay, to show that a boat under 
50  ft.  (15m.)is  at  anchor.  It  must  be 
visible for 2 mls. (3 km.). 
Rigging  screw:  a  deck  fitting  with 
which the tensions of standing rigging, 
e.g. stays, shrouds, etc. are adjusted. 
Roach: the curved part of the leech of 
a  sail  that  extends  beyond  the direct 
line from head to clew. 
Run: to run with the wind aft and with 
the sheets eased well out. 
Running  rigging:  all  the  moving 
lines,  such  as  sheets  and  halyards, 
used  in  the  setting  and  trimming  of 
sails. 
S 
Scope:  the  length  of  rope  or  cable 
paid out when mor anchoring. 
Scuppers: 1, holes in the toe rail that 
allow  water  to  drain  off  the  deck;  2, 
drain cockpit through hull. 
Seacock:  a  valve  that  shuts  off  an 
underwater  inlet  or  outlet  passing 
through the hull. 
Seize: to bind two ropes together, or a 
rope to a spar, with a light line. 
Serve: to cover and protect a splice or 
part of a rope with twine bound tightly 
against the lay. 
Serving  mallet:  tool  with  a  grooved 
head,  used  when  serving  a  rope  to 
keep the twine at a constant and high 
tension. 
Set:  1,  to  hoist  a  sail;  2,  the  way  in 
which  the  sails  fit;  3,  the  direction  of 
tidal current or steam. 
Shackle:  a  metal  link  with  a 
removable  bolt  across  the  end;  of 
various shapes: D, U. 
Sheave:  a  grooved  wheel  in  a  block 
or spar for a rope to run on. 
Sheet: the rope attached  to the clew 
of a sail or to the boom, enabling it to 
be controlled or trimmed. 
Shrouds:  ropes  or  wires,  usually  in 
pairs,  led  from  the  mast to the  chain 
plates  at  deck  level  to  prevent  the 
mast  falling  sideways;  part  of  the 
standing rigging. 
Sloop:  a  single-masted  sailing  boat 
with a mainsail and one head sail. 
Spar: a general term for any wooden 
or  metal  pole,  e.g.,  mast  or  boom, 
used to carry or give shape to sails. 
Spindrift:  spray  blown  along  the 
surface of the sea. 
Spinnaker:  a  large,  light,  balloon 
shaped  sail  set  when  reaching  or 
running. 
Splice:  to  join  ropes  or  wire  by 
unlaying the strands and interweaving 
them. 
Split pin: see cotter pin.