Section
Signals & Sound
Fog signals, lightships, daymarks and the paperwork that moves corrections to sea.
12 entries · newest first below
All Entries
- October 11, 2026The Buoy Service Cycle: Moorings, Inspections and RepairsSignals & Sound
- October 11, 2026AIS Aids to Navigation: Real, Synthetic and Virtual SignalsSignals & Sound
- October 11, 2026RACONs: How Radar Beacons Identify Lighthouses and HazardsSignals & Sound
- October 11, 2026How a Coast Is Lit: Landfall, Coastal and Harbor Lights in One NetworkSignals & Sound
- September 7, 2026Reading Light Characteristics: Fl, Oc, Iso and the Grammar of the Light ListSignals & Sound
- September 4, 2026Lighthouse Tenders: The Working Ships That Kept the Lights LitSignals & Sound
- August 28, 2026Region A vs Region B: The World's Two Buoyage SystemsSignals & Sound
- August 21, 2026Notices to Mariners: The Paper Trail That Keeps Charts TrueSignals & Sound
- August 14, 2026Reading the Daymark: Why Lighthouses Wear Stripes, Bands and ChevronsSignals & Sound
- August 7, 2026The Lighthouse Board of 1852: How America Reorganized Its LightsSignals & Sound
- July 31, 2026Lightships: Floating Lighthouses Where No Tower Could StandSignals & Sound
- July 31, 2026How Fog Signals Work: Bells, Whistles and the DiaphoneSignals & Sound
More in Signals & Sound
AIS Aids to Navigation: Real, Synthetic and Virtual Signals
Compare physical, synthetic and virtual AIS aids through the distinct locations of the transmitter, represente…
RACONs: How Radar Beacons Identify Lighthouses and Hazards
A coded radar extension identifies a beacon response. A teaching example separates the trace from a physical t…
How a Coast Is Lit: Landfall, Coastal and Harbor Lights in One Network
A hypothetical route explains landfall, coastal and harbor tasks, while keeping those stages separate from off…
Reading Light Characteristics: Fl, Oc, Iso and the Grammar of the Light List
Decode flash groups, color and period, then check a ten-second timing example without assuming the notation id…
Lighthouse Tenders: The Working Ships That Kept the Lights Lit
Fir’s launch and commissioning dates illuminate the tender’s history. Follow supplies from depot to installati…
Region A vs Region B: The World's Two Buoyage Systems
Regions A and B differ in lateral colors. A direction-reversal exercise explains why region, conventional dire…