Lessons from the Deep: Angles & Dangles

A submarine’s greatest strength is its stealthiness. Operating silently can literally be what saves the lives of the crew.

At the beginning of a deployment, one of the first things a submarine will do is an operation called “Angles & Dangles” —a series of increasingly greater up- and down-angles to see what comes loose and makes noise.

This is done in a safe environment and serves as a stress test of the quietness of the submarine, allowing the crew to find and resolve issues. 

As leaders, we need the same thing.

Many teams develop a plan, only to discover the weaknesses at full scale—when it’s expensive, public, and potentially dangerous. 

Instead, consider inserting an Angles & Dangles step between before full rollout: a short, high-stress rehearsal designed to make problems obvious while the cost of fixing them is still low.

Here's some examples of how to do it in business terms:

• Prototyping in the wild. Run a limited batch on a real line and capture what bent, broke, or bottlenecked before the full run.

  
  

• Parallel-pilot systems. Turn on the new ERP/CRM/WMS for one cell or run in parallel. Try to break it on purpose.

  
  

• Invite the skeptics. When considering anything new, ask two credible critics to participate, observe, and question the norms. Reward them for finding issues.

  
  

• Seal the lessons, then scale. Find, fix, rerun, and then go big.

Speed matters, but speed to learning beats speed to launch. Done well, Angles & Dangles will keep the crew alive and the mission on track.

👉 What’s one upcoming initiative you could put through an Angles & Dangles test this month?