You observe the planet Saturn at a sextant altitude (hs) of 63°05.1' on 25 May. The index error is 4.5' off the arc. The height of eye is 62 feet. What is the observed altitude (Ho)?

Correct Answer: Option C — 63°01.5'

Apply index error (off = subtract) to the sextant altitude. Subtract the dip correction for a 62-foot height of eye. Apply the planet altitude correction from the Nautical Almanac (including the additional correction for planets). The resulting observed altitude (Ho) is 63°01.5', following standard Bowditch celestial navigation reduction steps.