On 22 March your 1834 DR position is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing 062°T at an observed altitude (Ho) of 23°22.0'. The chronometer reads 01h 32m 37s, and is 01m 50s slow. Which star did you observe?

You desire to make good a true course of 203°. The variation is 19°E, magnetic c...

Your vessel is steering course 352°psc, variation for the area is 11°E, and devi...

At 0500 zone time on 21 August, your DR position is LAT 47°00'N, LONG 125°15'W....

At 0530 zone time on 20 December, you depart Cape Town (ZD -1). You are bound fo...

At 0600 ZT on 24 July your DR position is LAT 22°37'N, LONG 32°45'W. You are ste...

At 0915 zone time on 7 November you depart Seattle, LAT 47°36.0'N, LONG 122°22.0...

At 0915 ZT on 26 July you depart Yokohama, LAT 35°27.0'N, LONG 139°39.0'E (ZD -9...

On 1 July your 0515 ZT fix gives you a position of LAT 24°36.0'S, LONG 151°42.0'...

On 10 October your 1500 zone time DR position is LAT 27°35.6' S, LONG 44°49.0' W...

On 12 April at 0515 ZT, morning stars were observed, and the vessel's position w...