🔍 Key Concepts

• Longitude signal groups in maritime communications (how longitude is encoded in a group of letters/numbers) • Difference between degrees and minutes and how many digits are normally used for each in a group • How west longitudes are indicated (is the hemisphere letter required in this system?)

💭 Think About

• Look at how many digits you need to represent 109° 34' and how they are usually arranged in a standard longitude group. • Ask yourself whether the leading "1" for 109° is treated any differently than a two‑digit degree (like 09°). • Consider whether the letter(s) in front of the numbers indicate that the group is a longitude group, and whether a final "W" is normally included in this specific system.

✅ Before You Answer

• Verify the usual format for a longitude group (how many letters, how many digits, and their order). • Check whether all degrees and minutes of longitude are included, or if any leading digits are dropped. • Confirm if the hemisphere (E/W) is part of the encoded group or implied by context in this type of signaling.