✕ Close

Vessel Track Map Viewer

📅 Timeline Controls

• Previous/Next Period: Navigate between year-long periods (2020-2025)
• Blue slider (left): Start date of the range
• Red slider (right): End date of the range
• Blue highlighted bar: Click and drag to slide the entire time window
• Vessel track: Displays only within the selected date range

▶️ Animation

• Play (▶): Animate the time window forward
• Reverse (◀): Animate the time window backward
• Pause (⏸): Stop animation
• ⏮ Start: Snap to start of period (or previous period if already at start)
• End ⏭: Snap to end of period (or next period if already at end)
• Speed slider: Adjust animation speed (0.1s to 2.0s per frame)

⌨️ Keyboard Shortcuts

• Home: Snap to start (or previous period)
• End: Snap to end (or next period)
• Space: Toggle play/pause animation
• Arrow Left: Previous period
• Arrow Right: Next period

🗺️ Map Navigation

• Click and drag: Pan the map
• Mouse wheel: Zoom in/out at cursor position
• + button: Zoom in at center
• − button: Zoom out at center
• ⌂ button: Reset to original view

🚢 Vessel Track

• Red line: Vessel path during selected time range
• Red dot: Vessel position at end of range
• Tip: Set start = end for a single-day snapshot

🖼️ Background Images

• Background image aligns to the end date of the range
• If an image is missing, the viewer automatically uses the nearest earlier date
• Status message shows if a fallback image is being used