connections must be made through the manual switch-
board by an attendant.
The manual switchboard (fig. 6-51) is the link
The manual switchboard is connected to the
between the ship's dial telephone system and shore
control office switchboard by a 37-pin connector. The
when the ship is docked. It allows the ship's unrestricted
ship's lines, shore lines, all power, and supervisory
telephones to be connected to any shore line avail-
and central leads are brought into the manual
able to the ship. All ship-to-shore and shore-to-ship
switchboard through this connector.
Figure 6-51.--Manual telephone switchboard.