Difference between Underway and Making way #merchantnavy #deckcadet #cadet #ships #mariners #seaman

Main ideas / lessons conveyed

• The video explains the difference between “underway” and “making way” (and similarly “making waves”), using plain-language navigation/ship-handling concepts.
• “Underway” is treated as a general state of being in motion / proceeding, not necessarily at a speed that causes noticeable interaction with the water as “making waves.”
• “Making way” is tied specifically to cutting through the water—i.e., the ship’s motion relative to the water (not just relative to the ground).
• A key distinction emphasized repeatedly:
  • Speed through water ⇒ associated with cutting water / making way / making waves
  • Speed over ground ⇒ may not imply making way if currents/wind change what you “see” over the ground
• The speaker uses multiple situational examples (1–5) to show cases where a ship may be underway but not making way, and cases where it will make way.

Methodology / “instructional” structure used (checklist with examples)

The speaker effectively walks through this logic:

1. Step 1: Determine motion state

   • Identify whether the vessel is underway (generally moving/proceeding).

2. Step 2: Check relative motion to water

   • Ask whether the vessel is moving such that it is cutting the water.
   • If movement is causing effective cutting through water, then it is considered making way / making waves.

3. Step 3: Use the speed concept to decide

   • If speed through water is present/meaningful ⇒ making way.
   • If the ship’s motion is mainly explained by current pushing it over ground (high speed over ground but low/insignificant speed through water) ⇒ it may be underway but not making way.

4. Step 4: Apply to specific scenarios

   • The video presents five scenarios to illustrate this.

Detailed outline of the 5 scenarios

Scenario 1 (Vessel water tank / cup example)

• The speaker uses a container-like analogy:
  • A vessel/object may be moving (underway).
  • But whether it is making way depends on whether it is effectively moving relative to the water/cutting the water, not just being in motion.

Scenario 2 (Engine running then stopping)

• Example: engine is running, then stops.
• Key claim:
  • Even after stopping the engine, the ship may continue moving due to momentum.
  • During a time window, it still cuts the water at some effective speed, meaning it may still be making way.
  • Over time, that effect reduces as speed through water decreases.

Scenario 3 (Uncertainty resolved by observing speed through water)

• Speaker describes a case where you might not instantly know whether it’s making way.
• Resolution method:
  • You cannot reliably judge “making way” solely by surface observations like “is it moving.”
  • Instead, consider the ship’s speed through water / whether it continues cutting water.

Scenario 4 (River with current vs against current)

• If the ship moves with the current:
  • The ship can appear to have a certain speed over ground, but it may not necessarily have the same speed through water.
• Claim: “against current” means the vessel has to work differently; whether it makes way depends on effective speed relative to water.
• The video references earlier explanations about:
  • Speed through water vs speed over ground
  • “Speed over ground” can be affected by current.

Scenario 5 (Current + wind/external factors; favorable conditions)

• Example focuses on favorable current (and mentions wind/external factors).
• Key claim:
  • Speed over ground may look high, but speed through water may be low if the ship is largely being carried.
• In such a case, the vessel may be considered underway but not making way because it is not effectively cutting water.
• Closing reassurance:
  • If not “complying with the idea of making waves,” then the ship is treated as underway but not making way.

Speakers / sources featured

• Speaker: An unnamed YouTube creator/instructor (only identified through the narration style; no specific name provided in the subtitles).
• Sources mentioned:
  • The phrase “previous video” (the speaker references their own earlier content), but no specific channel/creator name is given beyond “my previous video.”