LSO | DLC-coated

LSO | DLC-coated


Our LSO watch is specifically designed for Landing Signal Officers to improve their efficiency in timing groove length of aircrafts on board Aircraft Carriers.   The Landing Signal Officer, is in charge of the safe and expeditious recovery of aircraft both day and night onboard US aircraft carriers. Each color along the chapter ring of the watch has a specific meaning and is associated with a grade given to the pilot after he or she lands. 


  • Swiss-engineered Quartz movement for unparalled precision

  • Diameter: 44mm

  • Case: Stainless Steel or DLC (Black)

  • BGW9 Lume

  • Case Back: Screw-in

  • Water Resistant, 100m

  • Domed, sapphire crystal

  • Strap: Black leather

  • Assembled in the United States by American watch craftsmen

Our DLC-coated LSO comes standard on a black leather band with fold-over DLC-coated steel clasp.  You can add additional straps to your cart by selecting an option below. We recommend buying a rubber strap for a more rugged look or a DLC-coated stainless bracelet to dress up your De Pol watch.

Case back engraving is also available.

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Engraving is available on all watch case backs.  Please note that engraving adds an additional 1-2 weeks for order fulfillment.

When you add this item to your cart, you will be prompted for engraving details.
Example: Wings (Pilot or NFO) and Call Sign/Name
*Please confirm spelling is correct prior to submission - engraving will appear on the watch precisely as it is written.*

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Additional Straps
from 75.00
Strap Material:
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The inspiration behind the LSO

This patented design features color indicators on the chapter ring to aid LSOs in timing groove length.  Groove length time starts when the aircraft rolls wings level, and finishes when it touches down on the carrier deck. The goal is to land quickly and safely within the green indicator.  The LSO then determines a pilot's grade based on this and other factors such as glideslope and lineup. 

Every time an aircraft touches down on a carrier, the pilot receives a grade.  This practice helps prevent complacency and establishes a baseline on which the pilot can improve.  The green indicator, representing a groove length of 15-18 seconds, is the goal.  If a pilot is slightly outside that parameter, in the yellow, it is considered a "little" deviation.  A groove length of 12-14 seconds is considered "a little not enough straightaway" (NESA) and 19-21 seconds is "a little long in the grove" (LIG).  The brown color indicates a "full" deviation. A groove length of 9-11 seconds is considered "full not enough straightaway" NESA, and 22-24 seconds is considered "full long in the groove" LIG.  The red color indicates an "underlined" deviation: _LIG_ or _NESA_. (We added the De Pol touch and gave the pilot the benefit of the doubt, that is why we extended the extra second on the backside and explains why the green is 15-19 seconds)