Fend off, in this context, refers to an immediate and urgent directive issued to boat crew members, instructing them to cease their present activities and focus their efforts towards manually protecting the vessel from imminent collision. Such a collision could be with the dock, other moored or moving vessels, or any structure within immediate surroundings. This preventive action often involves physical exertion, as it requires the use of poles, paddles, cushions, or any available tools to create a shield or buffer that absorbs the potentially damaging impact, thereby ensuring the safety and integrity of the boat.

1. "Fend off now, we're going to crash into that dock if we don't act immediately!" 2. As the strong wind pushed their boat towards another, the captain ordered his crew, "Fend off, guys! We can't afford to hit that yacht!" 3. As they saw the wave rushing towards them, threatening to push them onto the rocky shore, the skipper yelled at his crew, "Fend off! Push us back into the open water!" 4. "Fend off! Fend off!" the captain shouted as the unexpectedly strong current dragged their small boat towards the busy harbor with dangerously anchored boats. 5. Seeing the incoming ship that was obliviously speeding towards them, the harried captain called out to his crew, "Fend off right now or we'll be in pieces!"

Fun Fact: "Fend off" is a high-stakes phrase at sea! It's not just a casual command, but an immediate instruction for the crew members to stop all ongoing activities and manually protect the boat from potential collisions. The term was originally coined in the early 14th century, deriving from the Old English "fendian", meaning "defend". Despite its evolution over the years, it sure makes its urgent nature felt on board even today. Now, fancy a sailor's life, armed with a boathook, ready to "fend off" at a moment's notice? Just remember, the hull of the boat is depending on you!