Question 5062 Deck General

The correct answer is D) hydrostatic alarm switches. On a coastal drilling rig like the COASTAL DRILLER, the level of water in the bilge pits is typically monitored by hydrostatic alarm switches. These switches are designed to detect the water level and trigger an alarm when the level reaches a predetermined high or low point. This allows the crew to quickly identify and address any issues with the bilge system. The other answer choices are not correct. OSS units (A) are not typically used for bilge level monitoring on drilling rigs. Visual sight gages (C) can be used, but they require manual monitoring by the crew. Low and high level alarms (B) may be present, but they are generally triggered by the hydrostatic alarm switches rather than being the primary monitoring system.