Question 70

The Correct Answer is B **Explanation for Option B (5419N) being correct:** AMVER (Automated Mutual-Assistance Vessel Rescue System) reports require latitude and longitude to be expressed in specific formats. For latitude, the format is generally four or five digits: two digits for the degrees, and two or three digits for the minutes, followed by the hemisphere (N or S). The given latitude is 54°18.9'N. 1. **Degrees:** 54° 2. **Minutes:** 18.9' 3. **Rounding:** AMVER reports require minutes to be rounded to the nearest whole minute. $18.9'$ rounds up to $19'$. 4. **Format:** Combining the degrees (54), the rounded minutes (19), and the hemisphere (N) results in **5419N**. **Explanation for why the other options are incorrect:** * **A) 0543N:** This format suggests 54 degrees and 3 minutes, which is incorrect as it misrepresents the actual minutes (18.9'). Furthermore, using a leading zero for degrees in the 50s is unnecessary for this format and the minutes (03) are incorrect. * **C) 54.3N:** This uses a decimal format (decimal degrees), where $54.3$ degrees is approximately $54^{\circ}18'$, but the standard AMVER format requires expressing degrees and minutes separately (or rounding and expressing as whole minutes), not using decimal degrees. * **D) 54°N:** This format only includes the degrees, omitting the minutes ($18.9'$), which are necessary for accurate positioning in an AMVER report.