Which feature would likely be encountered first while navigating toward Oswego Harbor?

Navigating toward Oswego Harbor, one would likely first encounter strobe light stacks. These are significant navigational aids that provide critical information to mariners, particularly at night or in low visibility conditions. Strobe light stacks are usually positioned to mark important locations, such as channel entrances or hazards, making them easily identifiable from a distance.

Their visual cues play a vital role in guiding boats safely into harbor or through navigable channels. As you approach a harbor, it's common for these navigational markers to be among the first features that are noticed, as they help to indicate safe passage and appropriately direct vessels toward the harbor entrance.

Other features like barriers, marinas, and navigation buoys also play important roles in navigation, but they may not be the first indicators encountered when approaching a harbor. Barriers might be more common in certain types of waterways but aren't specifically associated with harbor entries. Marinas can often be found along the harbor but are typically further along the navigational route. Navigation buoys are essential for safe navigation, yet strobe lights typically serve as primary markers for entry points.