British coastal time signal network
E766600
The British coastal time signal network was a 19th- and early 20th-century system of visual and audible signals at ports around the UK that allowed ships to accurately set their marine chronometers for safe and precise navigation.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
British infrastructure
ⓘ
maritime navigation aid ⓘ time signal system ⓘ |
| aim |
to provide a common time reference for ships
ⓘ
to synchronise ship chronometers with observatory time ⓘ |
| appliesTo |
anchorages
ⓘ
coastal ports ⓘ harbours ⓘ |
| basedOn | Greenwich Mean Time NERFINISHED ⓘ |
| country | United Kingdom ⓘ |
| endTime | early 20th century ⓘ |
| follows | local apparent time practices ⓘ |
| hasComponent |
audible time signals
ⓘ
time balls ⓘ time guns ⓘ visual time signals ⓘ |
| hasEffect |
increased maritime safety
ⓘ
reduced navigational errors ⓘ standardisation of time at ports ⓘ |
| locationCharacteristic |
situated at prominent coastal sites
ⓘ
visible from harbour approaches ⓘ |
| operatedBy |
British port authorities
ⓘ
harbour masters ⓘ time signal observatories ⓘ |
| partOf | global development of time distribution systems ⓘ |
| reasonForDecline |
adoption of radio technology
ⓘ
improvements in onboard timekeeping ⓘ |
| replacedBy |
radio time signals
ⓘ
wireless telegraphy time signals ⓘ |
| signalType |
audible signal
ⓘ
visual signal ⓘ |
| significantFor |
determination of longitude at sea
ⓘ
long-distance sea navigation ⓘ marine chronometer calibration ⓘ |
| startTime | 19th century ⓘ |
| temporalContext |
age of sail
ⓘ
early steamship era ⓘ |
| typicalSignalEvent |
daily time drop of a time ball
GENERATED
ⓘ
firing of a time gun at a fixed hour GENERATED ⓘ |
| usedFor |
dissemination of accurate time
ⓘ
improving navigational accuracy ⓘ safe navigation ⓘ setting marine chronometers ⓘ |
| user |
merchant ships
ⓘ
naval vessels ⓘ navigators ⓘ ship captains ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.