RAMP BAY CONTROLS AND INDICATORS (Contd)
COUPLING DEVICE The coupling end (front) of the ramp bay floats
lower in the water than the interior bay, making it difficult to connect the
ramp bay to an interior bay. To lift the coupling end of the ramp bay up to
meet the level of the interior bay for ramp bay to interior bay connection, two
coupling devices are provided. The coupling device weighs 35 lb (16 kg).
Instructions for use of the coupling device are as follows:
Bridge boat operators will not make waves or carry out
any unnecessary thrust changes during coupling device
operations. Failure to comply may result in damage to
equipment or injury to personnel.
Do not attempt to use the coupling device in its folded
condition. Do not attempt to lift the ramp bay while
vehicles and/or equipment are on top of bay. Do not use
the coupling device if it is damaged or has missing
parts. Failure to comply may result in damage to
Use of coupling device applies to the IRB ramp bay for
coupling/uncoupling purposes only.
To perform ramp bay to interior bay connection, two
assistants are required to operate the coupling devices,
two assistants will man the retaining ropes, and two
assistants will close the longitudinal upper couplings
and the lower lock-drive pins.
a. Signal bridge boat operator to position connecting ends of ramp bay and
interior bay together approximately 8 in. (203 mm) apart.
b. Connect one guide rope to the nearest cleat on each outer ponton of ramp
bay, and guide ramp bay so that eyes on ramp bay yokes and interior
bay lower main couplings are aligned.
c. Remove two coupling devices from ramp bay stowage compartments and
position them on interior bay roadway deck, unfolded, and with hook
ends facing ramp bay.
Do not place hands between bays to position the
coupling device hook on the ramp bay unfolding lever;
bays can come together with extreme force and severe
injury to personnel may result.
d. Position each coupling device near center of ramp bay unfolding lever so
that hook engages on unfolding lever.