Figure 2 shows the layout of a scie

Figure 2 shows the layout of a science node. The backbone fiber optic cable contains an in-line breakout box which is functionally identical to a conventional branching unit. The third connection to the breakout box is a spur cable which is 1.5 water depths long. The spur cable contains two conductors and twice as many optical fibers as the backbone cable, and serves to bring all of these connections into the network module. The breakout box contains no active components, and should not ever require service that would necessitate use of a cable ship.