On 28 April your vessel's 0515 zone time position is LAT 23°26'S, LONG 95°30'E. At this time, the observed altitude (Ho) of the star Rigil Kentaurus is 24°51.4'. Your chronometer reads 11h 16m 36s and is 01m 18s fast. What is the intercept (a) based on the assumed position method?

Question

On 28 April your vessel's 0515 zone time position is LAT 23&deg;26'S, LONG 95&deg;30'E. At this time, the observed altitude (Ho) of the star Rigil Kentaurus is 24&deg;51.4'. Your chronometer reads 11h 16m 36s and is 01m 18s fast. What is the intercept (a) based on the assumed position method?

Accepted Answer

Option D: 34.4'. Following Bowditch assumed position techniques, determine GMT from chronometer data, extract sidereal hour angle and declination for Rigil Kentaurus, calculate local hour angle, and compare computed altitude with observed altitude to yield the intercept.

On 28 April your vessel's 0515 zone time position is LAT 23&deg;26'S, LONG 95&deg;30'E. At this time, the observed altitude (Ho) of the star Rigil Kentaurus is 24&deg;51.4'. Your chronometer reads 11h 16m 36s and is 01m 18s fast. What is the intercept (a) based on the assumed position method?

On 28 April your vessel's 0515 zone time position is LAT 23°26'S, LONG 95°30'E. At this time, the observed altitude (Ho) of the star Rigil Kentaurus is 24°51.4'. Your chronometer reads 11h 16m 36s and is 01m 18s fast. What is the intercept (a) based on the assumed position method?