U.S. Army Large Tug (LT) NSN 1925-01-247-7110 Operator's Manual

About this manual

This document is the Operator's Manual for the Large Tug (LT), identified by National Stock Number (NSN) 1925-01-247-7110. Published by the Headquarters, Department of the Army in August 1991, it serves as a technical guide for personnel operating this vessel in inland waterways, coastal waters, and the open ocean. The manual covers the vessel's use in towing, docking, undocking, and providing limited fire fighting, salvage, and rescue assistance to other ships and shore installations.

What's inside

• General Information
• Equipment Description
• Technical Principles of Operation
• Description and Use of Operator's Controls
• Preventive Maintenance Checks and Services
• Operation Under Usual Conditions
• Operation Under Unusual Conditions
• Lubrication Instructions
• Troubleshooting Procedures
• Maintenance Procedures

Frequently asked questions

What vessels is the Large Tug designed to tow?

The tug performs coastal and ocean towing, docking, and undocking operations with large ocean vessels, including SL-7 (FSS) LASH and SEABEE vessels, and it also handles barges in the open ocean.

What is the purpose of the Water Washdown System?

The system is designed to quickly reduce temperature within protected spaces, minimize hydrogen fluoride gas production, aid scrubbing of generated gas, and expedite ventilation.

What is the maximum temperature at which the Water Washdown System minimizes hydrogen fluoride gas production?

The system minimizes the production of hydrogen fluoride gas when the temperature is above 1300°F.