... Checks that
rudder indicator
shows maximum port
helm
Ease the wheel to Ease the wheel to Allows the wheel to Wheel eased to
port ten degrees port ten degrees, return towards the port ten degrees,
sir ... you expect wire lifeboat falls
to be. How often would you expect them to be renewed?
Ans. Extra flexible steel wire rope (6 × 36 or 17 × 7) wps. To be
renewed whenever required, and at no gre...
... Side
This term refers to that side of the vessel exposed to the wind. Seas may
be seen to break over the weather side as opposed to the lee side, which
is the sheltered, favoured side of the vessel.
Yaw
Wind ... water
is not a solid medium and there is some ‘slip’ related to it.
Slip may be considered as the difference between the speed of the
vessel and the speed of the engine. It is always...
... used to sleep in the
fo’c’sle head area, and the banging cables tended to keep them awake.
Hence they were lashed secure.
The more up-to-date thinking is that if the cable is lashed the chance
of ... secured when
the anchor is deployed.
Deck plate
Doubler
Underdeck frames
Hawse pipe (tubular
steel)
Bolster (steel)
‘D’
‘D’ represents the diameter of the
hawse pipe and is at least nine
times th...
... use as a grease
cavity.
Double and treble sheave purchase blocks are of a similar construction to
the single sheave, except that a partition plate separates the sheaves. They
are used extensively ... RIGGING
STEEL WIRE ROPE
A steel wire rope is composed of three parts – wires, strands and the
heart. The heart is made of natural fibre, though recently synthetic fibre
has been used when resista...
... be secured between legs
to prevent the rig collapsing and to provide extra strength.
The gyn can be erected manually when the legs are of limited length.
Should the length of legs be unmanageable, ... remembered that less friction is encountered when
using sheaves of a large diameter than sheaves of a small diameter. Similarly
NB. Helicopter have largely superseded the use
of breeches buoy op...
... Once the slip and bottle screw
are released, the gripe can be passed back over the boat and the end
cleared. However, some gripes are interconnected to the trigger system,
and the men in the boat ... weak link securing which
will part after the painter becomes fully extended and the pressure
increases, causing the safe working load/breaking strain to be exceeded.
‘D’
ring
Service
release
De...
... and Depth
Multiple echoes
These are caused by the transmitted pulse being reflected several times
between the sea bed and the water surface before its energy is dispersed.
Such multiple reflection ... type of echo is a double reflection of the transmitted pulse. It
occurs when the energy is reflected from the sea bed and then reflected
back from the surface of the water before being received...
... the vessel may be expected
to roll somewhat slowly and independently of the waves. The vessel will
probably experience only moderate angles of roll, and the waves may be
expected to break near ... the operation.
85 Meteorology
Severe wear of the outer shell plating will be experienced at the
waterline level, and for some height and depth above this level, according
to the thickness of the .....
... Seamanship Techniques
Red
Green
Vessel less than 50 m in length
restricted in her ability to manoeuvre.
Green
Red, white, red,
all-round lights
shown where they
can best be seen.
Red
Range 2 miles
Head ... can
Green
Green
Conical
Spar
Pillar
Red
Green
Red
Red
Green
Preferred channel to starboard, red with green stripe, and
red light flashing 2 + 1 (group flashing).
Green
Red
Green
Green
R...
... derricks been lowered or removed?
(d) Where applicable, have portable pipes been removed
and have the remaining open ends been blanked off?
(e) Are rope messengers to hand for securing the helicopter
if ... considerable time to secure. In an emergency it may even prove
impossible to secure against water pressure on one side.
Regular and extensive maintenance is required on the clips to ensur...