What changes
• Below ~3 kn, water flow over hull/propellers is weak → thrust becomes less predictable and can feel “delayed”.
• Wash can recirculate and interact with the hull and the other unit → power does not always equal control.
• Small rapid corrections often make things worse (unstable flow).

Typical vessel reactions
• Delayed response: initial “nothing happens”, then sudden swing once flow builds → risk of over-correcting.
• Transverse dominates: large azimuth angles can create strong sideways kick; vessel may slide instead of turn.
• Stern instability: stern can “hunt” left/right when both units are angled and interacting.

Common mistakes
• Chasing heading with fast alternating commands → keeps flow unstable, reduces effective thrust.
• Using high-power sideways thrust close to objects → unpredictable slide + higher contact risk.

Golden rules
• Flow before force: control comes from stable water flow, not from maximum power.
• Speed creates steering: even 0.5–1.0 kn ahead can dramatically improve predictability.
• Time is a control input: pause a few seconds to see the true effect before correcting.

Practical low-speed tips
• Build minimal longitudinal flow (0.5–1.0 kn) before asking for “precision” turns or traverse.
• Avoid rapid azimuth changes; use fewer, cleaner inputs and allow the wash to settle.
• Prefer symmetrical thrusters at very low speed when possible to reduce interaction surprises.
• Reduce power close to quays/structures; increase patience and planning distance.