Saturday, May 11, 2013

Turvavesimerkki / A Safe Water Mark

Kotka 27.4.2013.

Väri: Punaisia ja valkoisia pystysuoria raitoja.
Heijastimet: Valkoinen ylhäällä, punainen alhaalla.
Valotunnus: Valkoinen kestovilkku.
Käytetään osoittamaan esimerkiksi väylän keskilinjaa, kuljetaan merkiltä merkille.
Via Wiki.

A Safe Water Mark, as defined by the International Association of Lighthouse Authorities, is a sea mark used in maritime pilotage to indicate the end of a channel. It usually implies that open, deep and safe water lies ahead, though it is sometimes also used to indicate the start and end of a buoyed section of a continuous narrow channel, or a line of these marks can be used to mark a safe route through shallow areas. It is therefore important to consult an appropriate chart to determine the exact meaning in each case. The marker is also sometimes known as a Fairway Buoy. It is recognisable by its red and white vertical stripes and commonly bears a top-sign in shape of a red ball. Lighted buoys flash morse code "A", occulting (more light than dark), Isophase (equal light and dark) or long flash every 10 seconds (L Fl 10s).
Via Wiki.

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