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In this regard, does long whistle blast mean lifeguard?

One long blast of the whistle means - clear the pool quickly. This may be an 'emergency'. After a pool check, the Lifeguards will blow two short blasts signaling to the swimmers that they may re-enter the water.

Also, what does long and two short blasts mean? One prolonged blast at intervals of not more than two minutes is the signal used by power-driven vessels when underway. One prolonged blast plus two short blasts at intervals of not more than two minutes is the signal used by sailing vessels.

Furthermore, what does 3 whistles mean?

Three blasts of the whistle is an international distress call, which is loosely translated to "Help me!" Two blasts of the whistle is a call-back signal which means "Come here." One blast can mean "Where are you?" or it can be a call-back signal if you hear anything that sounds like a code.

What does 3 long blasts of a ship horn mean?

The 3 prolonged blasts given by cruise ships are called the "show blast". 3 short blasts would indicate the vessel as engaged astern propulsion (preparing to travel in reverse). 3 long blasts have no meaning, it is a horn signal without an assigned definition. When someone states the 3 blasts "have no meaning".