Mighty Mo is Bigg City Port's largest floating crane, well known for his booming voice.
Mighty Mo is used for many salvage operations, in which he usually takes charge. Once, his hawser jammed whilst lifting Boomer out of the water. He also helped the rescue operation to save Lillie Lightship from sinking. Once, he also helped the Fultan Ferry after an accident.
- Nigel Anthony (TUGS)
- Ian James Corlett (Salty's Lighthouse)
- Kōji Ishii (Japan)
- Pauli Virta (Finland; Regatta only)
- Elise Langenoja (Finland; Warrior onwards)
- Mighty Mo is the only character to have two megaphones (rather than one) in the series, which could explain about his booming voice.
- Having two megaphones might mean that he has two operators.