What was a key limitation faced by NCDUs during their missions?

A key limitation faced by Naval Combat Demolition Units (NCDUs) during their missions was the restricted capacity of the small boats they operated. These vessels were designed for stealth and mobility, which meant they could not carry large amounts of heavy equipment that might have been necessary for more extensive demolition tasks or heavier assaults. This limitation affected the units' operational capabilities, as they often had to adapt their strategies to make use of lighter explosives and tools that could be efficiently transported.

Additionally, while troop numbers and air support play significant roles in military operations, the limitation arising from boat capacities specifically hampered the NCDUs' ability to bring sufficient resources for demolitions and other necessary tasks directly related to their mission objectives. Coordination with other military branches is another crucial factor in successful operations, but the core issue for NCDUs revolved more around the physical limitations imposed by their equipment and transport options.