No, the flood never actually happened and it was only written about in a spiritual (not literal) sense, in myths and scriptures. Myths are misunderstood today because the are 1.) meant to be taken literally, or 2.) meant to be considered 'fables' (not true), all which is by design from the enemy who worked very hard to completely remove this sacred knowledge from the world. To us Zevism here learning on this path these stores mean a lot more and hold immense depth regarding spiritual reality.
The ark or boat could have several meanings. I think that this might is most likely true in this case:
"Since ancient times, the imagery of the boat to ferry a soul from one realm to the other has been a part of the symbolism of death. In Greek mythology, the River Styx wrapped its way around Hades (the Underworld) nine times."
It could represent the 'vessel' (the body that carries the soul) and the water/ocean I believe could represent the soul itself. This idea is an interesting possibility as these 'waves' and things outside our body change the position of the 'vessel' and carry it to new places (planes of existence).
In this allegory there was this transformation that took place, a time of great turmoil followed by peace. This is all very spiritual and it should not be taken literally.
I'm certainly no expert here but I think the best way to find the answers to these questions is to meditate, ask our Guardian Demon for guidance/answers and to research these subjects on the JoS website and (to a lesser degree) outside of it with a strong Satanic and critical point of view.