What reference can be used to find general information on main engine reduction gears?

What reference can be used to find general information on main engine reduction gears?

• A. NSTM 9410
• B. NSTM 9420
• C. NSTM 9430
• D. NSTM 9400

Answer: (B)

The correct reference for finding general information on main engine reduction gears is NSTM 9420. The Naval Ships Technical Manual (NSTM) series is structured to provide specific technical guidance on various systems and equipment used in naval vessels. Each section is dedicated to different topics related to shipboard systems. NSTM 9420 specifically covers reduction gears and related components, including their design, operation, maintenance, and troubleshooting procedures. This makes it an essential resource for Machinist's Mates who need detailed knowledge about reduction gear operation and servicing. Other options in this set correspond to different topics: NSTM 9410 provides information related to propulsion systems, NSTM 9430 focuses on shafting systems, and NSTM 9400 generally relates to marine engineering systems. While these manuals are important for their respective areas, they do not specifically address reduction gears, which is why NSTM 9420 is the appropriate choice for someone seeking information on that topic.

The correct reference for finding general information on main engine reduction gears is NSTM 9420. The Naval Ships Technical Manual (NSTM) series is structured to provide specific technical guidance on various systems and equipment used in naval vessels. Each section is dedicated to different topics related to shipboard systems.

NSTM 9420 specifically covers reduction gears and related components, including their design, operation, maintenance, and troubleshooting procedures. This makes it an essential resource for Machinist's Mates who need detailed knowledge about reduction gear operation and servicing.

Other options in this set correspond to different topics: NSTM 9410 provides information related to propulsion systems, NSTM 9430 focuses on shafting systems, and NSTM 9400 generally relates to marine engineering systems. While these manuals are important for their respective areas, they do not specifically address reduction gears, which is why NSTM 9420 is the appropriate choice for someone seeking information on that topic.