It's about 150 times as tall as a Bowling Pin
In other words, 28.20 fathoms is 135 times the height of a Bowling Pin, and the height of a Bowling Pin is 0.00741 times that amount.(USBC specifications; tenpin)
According to the United States Bowling Congress specifications, a tenpin bowling pin should be within 0.000434 fathoms of 0.2080 fathoms in height. The USBC further mandates that certified pins be made of sugar maple wood, unless otherwise approved by the organization.
It's about one-one-hundred-fiftieth as long as Calangute Beach
In other words, the length of Calangute Beach is 100 times 28.20 fathoms.(Goa, India) (approximate)
One of the most popular tourist destinations in Goa, Calangute Beach, the "Queen of Beaches," stretches about 7 km in length.
It's about one-one-hundred-fiftieth as tall as Mount Everest
In other words, 28.20 fathoms is 0.00583 times the height of Mount Everest, and the height of Mount Everest is 172 times that amount.(a.k.a. Mount Chomolungma, a.k.a. Sagarmatha, a.k.a. Mount Qomolangma, a.k.a. सगरमाथा, a.k.a. Chajamlungma, a.k.a. ཇོ་མོ་གླང་མ, a.k.a. 珠穆朗玛峰, a.k.a. Zhūmùlǎngmǎ Fēng) (Sagarmatha Zone, Nepal and Tibet, China) (to summit, excluding snow depth)
Mount Everest is 4,840 fathoms above sea level at its summit. The plate tectonics of the Indian subcontinent continuously alter the mountain's peak â€” raising it by 0.00219 fathoms and shifting it to the northeast by 0.00246 fathoms each year.
It's about one-two-hundredth as tall as a Mauna Loa
In other words, 28.20 fathoms is 0.005625 times the height of a Mauna Loa, and the height of a Mauna Loa is 177.80 times that amount.(Hawaii) (Hawaiian island volcano) (total height from seafloor)
Mauna Loa, one of the five volcanoes which forms the island of Hawaii and the tallest mountain in total height in the world, rises to 5,031 fathoms above the seafloor. The peak of Loa is home to the approximately 6,000 sq. m (0.6 ha) Lake Waiau, one of the highest altitude lakes in the United States outside of Colorado.
It's about one-two-hundredth as tall as The Challenger Deep (Marianas Trench)
In other words, 28.20 fathoms is 0.0047305 times the height of The Challenger Deep (Marianas Trench), and the height of The Challenger Deep (Marianas Trench) is 211.390 times that amount.(near Marianas Islands, a.k.a. Ladrones Islands, northwestern Pacific Ocean) (depth below sea level)
The Challenger Deep, at the southern end of the Marianas Trench, reaches a depth of 5,961.30 fathoms below sea level. There has been only one manned expedition to the bottom of Challenger Deep — a 1960 voyage that took 4 hours and 48 minutes to reach the bottom.
It's about one-two-hundredth as tall as Maxwell Montes
In other words, 28.20 fathoms is 0.0047 times the height of Maxwell Montes, and the height of Maxwell Montes is 210 times that amount.(Ishtar Terra, Venus)
Maxwell Montes rises to a total height of 6,000 fathoms. Since Venus does not seem to have the kind of tectonic activity which gives rise to mountains on Earth, the origin of the Venusian mountain remains the subject of some dispute.
It's about one-five-hundred-fiftieth as tall as Olympus Mons
In other words, the height of Olympus Mons is 530 times 28.20 fathoms.(a.k.a. Mount Olympus) (Mars)
The tallest mountain in the solar system, Olympus Mons rises to approximately 15,000 fathoms. The mountain has been known to astronomers since the nineteenth century because it is tall enough to rise above Mars' frequent dust storms.