The book appears to be a combination of Biblical literalism, distrust of “mainstream” science, and a superficial understanding of ancient history.
Here is just some of Krupa’s lengthy book description:
The controversial great flood of the bible and Noah’s Ark are not mythical. There was a real flood large enough to be called a worldwide flood, and a real vessel. The Ark existed, not exactly as described in Genesis, but as changed by Ptolemy I of Egypt who ordered the first translation of the Bible. The design of the ark is based upon the Star of David. This geometrical form was not developed as a symbol, but was used as a practical design of the ark’s keel and later for the invention of the Greek alphabet. It was also used in the layout of Stonehenge about 2600 BC. The story of the Biblical flood begins with the rising of the water level of the Atlantic Ocean, about 29000 years ago when the narrow isthmus connecting South America to Antarctica failed creating the Drake Passage. This most significant world event ended the last Ice Age and precluded forever their return. It caused the mass extinctions. Global warming, still happening, resulted in the melting of the ice cap and raising sea level, setting up the Biblical flood and today, the resounding controversy over its cause. It left us a legacy of an earthquake and volcano prone Pacific basin. Considerable blame for the failure of science to recognize the correct timing of the opening of the Drake Passage falls directly on the false theory of Continental Drift and Tectonic Plates. These theories were never scientifically proven, but were eventually adopted by mainstream geologists by consensus agreement.
Krupa goes on to say that combining descriptions of the Ark from Genesis and the Epic of Gilgamesh allowed him to discover that the keel of the Ark was shaped like the Star of David, that Alexander the Great copied the design for his fleet, and that (apparently anticipating his own early death) he built his tomb in the shape of the Ark because of his awe for the ancient ship. Krupa also accuses Ptolemy I of falsifying the Septuagint to hide the true shape of the Ark. (Flood Arks have been many shapes including round, rectangular, and cube-shaped.)
But here’s what takes the cake:
About a thousand years later it (Alexander’s tomb) was discovered by Arabs who regarded the mysterious building of unknown origin, as a holy place, known today as the Kaaba, their most revered shrine. It has managed to escape identification as an ark because people don’t yet know what an ark looks like.