INTRODUCTION TO LIGHT Describing a Light's Characteristics Rhythm of The Light Color of The Light Examples Prepared by Selçuk NAS

INTRODUCTION TO LIGHT Prepared by Selçuk NAS

Major light, minor light, lighthouse                    Lighted offshore platform Lighted beacon tower                  Lighted beacon Articulated light; Buoyant beacon, resilient beacon Light vessel, Lightship, Normally manned light-vessel Unmanned light-vessel, light float LANBY, superbuoy as navigational aid

DESCRIBING A LIGHT'S CHARACTERISTICS THREE FACTORS ARE USED TO DESCRIBE A LIGHT'S CHARACTERISTICS: 1) LIGHT RHYTHM LIGHTED AIDS TO NAVIGATION ARE EITHER "FIXED" (CONTINUOUSLY ON) OR GENERALLY EXHIBIT RHYTHMS SUCH AS: "FLASHING", "OCCULTING", "ISOPHASE", ETC. (SEE NEXT CHART) 2) LIGHT PERIOD FOR OTHER THAN "FIXED" LIGHTS, THE TIME IN SECONDS DURING WHICH THE PATTERN OF FLASHES IS REGULARLY REPEATED 3) LIGHT (LENS) COLOR RED AND GREEN (HAVE LATERAL SIGNIFICANCE) WHITE AND YELLOW (HAVE NO LATERAL SIGNIFICANCE) FOR EXAMPLE: A LIGHT WITH PUBLISHED CHARACTERISTICS OF "Fl G 6s" WOULD HAVE A FLASHING LIGHT RHYTHM, GREEN LENS COLOR, ONE FLASH PER PERIOD, AND A PERIOD OF SIX SECONDS.

Occ (3+1) R 10 sec. 25 m. 6 M. LIGHT'S CHARACTERISTICS RHYTHM OF THE LIGHT COLOR OF THE LIGHT PERIOD OF THE LIGHT LIGHT ELEVATION NOMINAL RANGE Occ (3+1) R 10 sec. 25 m. 6 M. A B C D E 1

A. RHYTHM OF THE LIGHT SABİT (FİX), [ F ] Sürekli Işık Veren ÇAKARLI (FLASHING), [ Fl ] Işık Süresi, Karanlık Süresinden Az SABİT ÇAKARLI (FİX FLASHING), [ FFl ] Hem Sürekli Hem De Çakarlı UZUN ÇAKARLI (LONG FLASHING), [ LFl ] Işık Süresi Min. 2 Saniye Çakarlı İZOFAS (ISOPHASE), [ Iso ] Işık Ve Aydınlık Süreleri Eşit 6. HUSUFLU (OCCALTING), [ Occ ] Işık Süresi, Karanlık Süresinden Fazla 7. SERİ ÇAKARLI (QUICK), [ Q ] Dakikada 50 – 80 Çakar KESİNTİLİ SERİ ÇAKARLI (INTERRUPT QUICK), [ IQ ] Dakikada 50 – 80 Çakar, Kesinti Var 9. HIZLI SERİ ÇAKARLI (VERY QUICK), [ VQ ] Dakikada 80 – 160 Çakar KESİNTİLİ HIZLI SERİ (INTERRUPT. VERY QUICK), [ IVQ ] Dakikada 80 – 160 Çakar, Kesinti Var 11. ÇOK HIZLI SERİ (ULTRA QUICK), [ UQ ] Dakikada 160 Fazla Çakar 12. KESİNTİLİ ÇOK HIZLI SERİ (INTERRUPT ULTRA QUICK), [ IUQ ] Dakikada 160 Fazla Çakar, Kesinti Var MORS KODU (MORSE CODE), [ Mo ] Mors Sinyali Şeklinde Çakan RENK DEĞİŞTİREN (ALTERNATING), [ Al ] Renk Değiştiren 1

PORTAKAL ( ORRANGE ) [ O ] B. COLOR OF THE LIGHT BEYAZ ( WHITE ) [ W ] KIRMIZI ( RED ) [ R ] YEŞİL ( GREEN ) [ G ] SARI ( YELLOW ) [ Y ] PORTAKAL ( ORRANGE ) [ O ] 1

AB. RHTYHM AND COLOR OF THE LIGHTS 1. SABİT ( FIX ) ( F ) F F R F G 1

2. ÇAKARLI – ŞİMŞEKLİ (FLASHING) ( Fl ) : Fl R Fl G Fl (2) Fl (2) R Fl (2) G Fl (3) Fl (3) R Fl (3) G Fl (3+2) Fl (3+2) R Fl (3+2) G Fl (2+1) Fl (2+1) R Fl (2+1) G 1

3. SABİT ÇAKARLI (FİX FLASHING) ( FFl ) : FFl R FFl G 1

4. UZUN ÇAKARLI (LONG FLASHING) ( LFl ) : 5 . BÖLÜM FENERLER 4. UZUN ÇAKARLI (LONG FLASHING) ( LFl ) : LFl LFl R LFl G 1

Examples of a Full Light Description

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TYPE OF LIGHT Lights Marking Fairways Direction Lights Sector Lights Leading lights with leading line (firm line is fairway) and arcs of visibility; Bearing given in degrees and minutes Leading lights ‡ : any two objects in line Bearing given in degrees and minutes Lights in line, marking the sides of a channel Direction Lights Direction light with narrow sector and course to be followed, flanked by darkness or unintensifed light fairway sector flanked by sectors of different character Sector Lights Sector light on standard charts All-round light with osbscured sector Special Lights Aero light

THIS PRESENTATION WAS PREPARED BY SELÇUK NAS Wep Page: www.nasmaritime.com E MAIL : nas@nasmaritime.com E MAIL : snas@deu.edu.tr Mobile Phone : +90 532 331 51 31 Phone : +90 232 278 22 30 Address : Fulya sok. No 33/3 Balcova Izmir TURKEY 1