10-14 Operations under extreme conditions
10-14.1 Operations In extreme heat. This boat has been designed with oversize engine compartment vents to provide
sufficient airflow for operations in tropical conditions. In temperatures above 50F, use diesel lubricating oil CD (MIL-L-
2104), SAE 20W30, for engine and outboard drive. Other lubricating requirements do not change with changes in
temperature or season.
10-14.2 Operations in high humidity conditions. High temperatures and high humidity combine to produce large
amounts of condensation. Since diesel engines must have fuel free of water, precautions must be taken to prevent
condensation creating water in the fuel system.
Refuel often and keep fuel tank as dose to full as possible. However, allow space for fuel expansion due to heat.
Do not allow boat to remain idle with a partially filled tank as this provides area for water condensation in the tank.
When operating continuously in these conditions, change fuel filters every 100 hours instead of the normal 200
10-14.3 Operations In extreme cold. It is not contemplated that barge and workboat will be deployed to locations with
ambient temperatures below freezing. However, in temperatures below 50F, follow these procedures:
Use diesel lubricating oil CD (MIL-L-2104), SAE 10W, for engine and outboard drive.
Make longer use of glow plug warmup prior to starting engine.
Take longer time to warm up engine before using power.