English to Spanish Art/Literary Poetry & Literature

Hola, estoy haciendo la traducción de una fábula y esta frase no me queda clara. Aquí va algo de contexto.

After sitting idle for a month, the captain made his first run to the mainland with only 20 of the 100 oars manned on the new ship. His time was still faster than the older sailing ships, but only by four hours. The captain began asking all of the villagers to join him on his venture.
He explained how the ship worked, and why this new type of vessel would one day rule the sea and make them a stronger kingdom. He talked of the riches awaiting the bravest among them.
On his second run the following month, he had 60 in his crew. Still short more than 40 rowers and struggling with the constant bungling and banging together of the oars, the captain saved only seven hours on the trip to the mainland.
Gracias