SD Dojavi Slobodna Dalmacija
stdClass Object ( [id] => 1147963 [title] => Kako pravilno odabrati sidro? Ovo su propisane norme, prednosti i mane, a jedan faktor ne smije se zanemariti [alias] => kako-pravilno-odabrati-sidro-ovo-su-norme-prednosti-i-mane [catid] => 418 [published] => 1 [introtext] => [fulltext] =>

Kupio sam polovni poludeplasmanski brod Grašo 23 s dizelskim motorom, dug 7,60 metara i težak oko 2500 kg. Kako njim namjeravam ići na đite i u ribolov, a dobio sam samo pomoćno sklopivo sidro mačak od 7,5 kg, molim vaš savjet koje bi sidro i koliko teško bilo primjereno za sidrenje na điti, te koliko bi trebale biti debele inoks žice ribolovnog mačka da dobro drži brod?

Marin P., Rijeka

Ma kakvo vi imali mišljenje o sidru koje ste dobili, ono ipak zadovoljava propisanu masu pomoćnog sidra za vašu brodicu. Kako Grašo 23 nema ni veći deplasman niti mu je nadgrađe veće površine, za njega vrijede norme propisane brodicama dužine između 7 i 8 metara.

Dakle, minimalna masa glavnog sidra je 10 kg, a promjer sidrenog lanca 8 ili najlonskog sidrenog konopa 12 mm. Masa pomoćnog sidra je minimalno 5 kg, njegova lanca 6 ili sidrenog konopa 10 mm.

Općenito, dužina sidrenog lanca ili konopa ne smije biti manja od četiri dužine trupa, a na brodicama kraćim od sedam i po metara najmanje 30 metara. Navedene mase odnose se na sidra povećane sile držanja, a za tradicionalna sidra, kao spomenuti mačak, masa mora biti uvećana za 25 posto.

Propisane norme

To su zakonom propisane norme, ali učinkovitost modernih sidara ne ovisi više toliko o njegovoj težini već o obliku i materijalu od kojeg je sidro izrađeno. Primjera radi, sidra Fortress su skrojena od žilave aluminijske legure, dok HydroBubble imaju plug od nehrđajućeg čelika, a tijelo također od legure aluminija.

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image
Aluminijska sidra Fortress imaju iznimnu nosivost
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Njihova nosivost neusporedivo je veća od većine ostalih sidara. Neka su mjerenja pokazala kako, premda su vrlo sličnog oblika, sidra Fortress nose dvostruko veće opterećenje od upola težeg klasičnog Danfortha.

Dakle, kod odabira sidara treba obratiti pažnju na opterećenja koja mogu nositi, a ne na njihovu težinu. Za motornu brodicu dužine 8 i širine do 2,75 metara vrijedi da ribolovni mačak mora podnijeti opterećenje od 60 kg, radno sidro 225, a olujno 445 kg.

Naravno, takva sidra moraju biti i u okviru gore navedenih zakonskih normi. Prema tome je i tondin debljine 8 mm dovoljan za krakove mačka, a ako se krak ipak sam ispravlja to znači da ima veliku polugu i da nije dovoljno zakrivljen.

Prednosti i mane

Različita sidra na različitim vrstama dna imaju različite prednosti i mane, iskustva su individualna, pa je i bilo kakva preporuka nezahvalna.

Međutim, kod odabira morate obratiti pažnju na još jedan nimalo zanemariv faktor. Osim što mora odgovarati veličini vaše brodice i vrsti dna na kojem se najčešće sidrite, svakako obratite pažnju na njegov oblik s obzirom na prostor za njegovo odlaganje.

Neka su sidra možda i idealna za vašu brodicu, ali su takvog oblika da ih je nemoguće postaviti na već ugrađen nosač na pramcu, a ne može ih se ugurati u niti jedan gavun.

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Patentni mačak dobar je za pomoćno sidro
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Pošto je sklopivi mačak kojeg ste dobili dobar za sidrenje na kamenitom i koraljnom dnu, bilo bi dobro da vam drugo sidro ima dobre karakteristike za pijesak i mulj.

Cijena sidra nikako ne bi trebala biti odlučujući faktor jer s obzirom na ukupnu vrijednost plovila ona je gotovo zanemariva, a i stara narodna izreka kaže: Brod vrijedi onoliko koliko mu vrijedi sidro koje nosi.

Pitanja šaljite na more@slobodnadalmacija.hr.

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Čitajte sve o jedrenju, đitama po Jadranu, brodovima na struju, brodskim motorima i popravku broda. Učimo vas kako održavati brod. 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Kupio sam polovni poludeplasmanski brod Grašo 23 s dizelskim motorom, dug 7,60 metara i težak oko 2500 kg. Kako njim namjeravam ići na đite i u ribolov, a dobio sam samo pomoćno sklopivo sidro mačak od 7,5 kg, molim vaš savjet koje bi sidro i koliko teško bilo primjereno za sidrenje na điti, te koliko bi trebale biti debele inoks žice ribolovnog mačka da dobro drži brod?

Marin P., Rijeka

Ma kakvo vi imali mišljenje o sidru koje ste dobili, ono ipak zadovoljava propisanu masu pomoćnog sidra za vašu brodicu. Kako Grašo 23 nema ni veći deplasman niti mu je nadgrađe veće površine, za njega vrijede norme propisane brodicama dužine između 7 i 8 metara.

Dakle, minimalna masa glavnog sidra je 10 kg, a promjer sidrenog lanca 8 ili najlonskog sidrenog konopa 12 mm. Masa pomoćnog sidra je minimalno 5 kg, njegova lanca 6 ili sidrenog konopa 10 mm.

Općenito, dužina sidrenog lanca ili konopa ne smije biti manja od četiri dužine trupa, a na brodicama kraćim od sedam i po metara najmanje 30 metara. Navedene mase odnose se na sidra povećane sile držanja, a za tradicionalna sidra, kao spomenuti mačak, masa mora biti uvećana za 25 posto.

Propisane norme

To su zakonom propisane norme, ali učinkovitost modernih sidara ne ovisi više toliko o njegovoj težini već o obliku i materijalu od kojeg je sidro izrađeno. Primjera radi, sidra Fortress su skrojena od žilave aluminijske legure, dok HydroBubble imaju plug od nehrđajućeg čelika, a tijelo također od legure aluminija.

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image
Aluminijska sidra Fortress imaju iznimnu nosivost
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Njihova nosivost neusporedivo je veća od većine ostalih sidara. Neka su mjerenja pokazala kako, premda su vrlo sličnog oblika, sidra Fortress nose dvostruko veće opterećenje od upola težeg klasičnog Danfortha.

Dakle, kod odabira sidara treba obratiti pažnju na opterećenja koja mogu nositi, a ne na njihovu težinu. Za motornu brodicu dužine 8 i širine do 2,75 metara vrijedi da ribolovni mačak mora podnijeti opterećenje od 60 kg, radno sidro 225, a olujno 445 kg.

Naravno, takva sidra moraju biti i u okviru gore navedenih zakonskih normi. Prema tome je i tondin debljine 8 mm dovoljan za krakove mačka, a ako se krak ipak sam ispravlja to znači da ima veliku polugu i da nije dovoljno zakrivljen.

Prednosti i mane

Različita sidra na različitim vrstama dna imaju različite prednosti i mane, iskustva su individualna, pa je i bilo kakva preporuka nezahvalna.

Međutim, kod odabira morate obratiti pažnju na još jedan nimalo zanemariv faktor. Osim što mora odgovarati veličini vaše brodice i vrsti dna na kojem se najčešće sidrite, svakako obratite pažnju na njegov oblik s obzirom na prostor za njegovo odlaganje.

Neka su sidra možda i idealna za vašu brodicu, ali su takvog oblika da ih je nemoguće postaviti na već ugrađen nosač na pramcu, a ne može ih se ugurati u niti jedan gavun.

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image
Patentni mačak dobar je za pomoćno sidro
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Pošto je sklopivi mačak kojeg ste dobili dobar za sidrenje na kamenitom i koraljnom dnu, bilo bi dobro da vam drugo sidro ima dobre karakteristike za pijesak i mulj.

Cijena sidra nikako ne bi trebala biti odlučujući faktor jer s obzirom na ukupnu vrijednost plovila ona je gotovo zanemariva, a i stara narodna izreka kaže: Brod vrijedi onoliko koliko mu vrijedi sidro koje nosi.

Pitanja šaljite na more@slobodnadalmacija.hr.

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Damir Višić
Damir Višić
Graši 23 treba glavno sidro od najmanje 10 kg

Aluminijska sidra Fortress imaju iznimnu nosivost

Patentni mačak dobar je za pomoćno sidro
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StoryEditorOCM
Nautika

nautički savjetnikKako pravilno odabrati sidro? Ovo su propisane norme, prednosti i mane, a jedan faktor ne smije se zanemariti

Piše Damir Višić, sudski vještak za nautiku
2. prosinca 2021. - 15:42
Graši 23 treba glavno sidro od najmanje 10 kg
Galerija
Graši 23 treba glavno sidro od najmanje 10 kgDamir Višić

Kupio sam polovni poludeplasmanski brod Grašo 23 s dizelskim motorom, dug 7,60 metara i težak oko 2500 kg. Kako njim namjeravam ići na đite i u ribolov, a dobio sam samo pomoćno sklopivo sidro mačak od 7,5 kg, molim vaš savjet koje bi sidro i koliko teško bilo primjereno za sidrenje na điti, te koliko bi trebale biti debele inoks žice ribolovnog mačka da dobro drži brod?

Marin P., Rijeka

Ma kakvo vi imali mišljenje o sidru koje ste dobili, ono ipak zadovoljava propisanu masu pomoćnog sidra za vašu brodicu. Kako Grašo 23 nema ni veći deplasman niti mu je nadgrađe veće površine, za njega vrijede norme propisane brodicama dužine između 7 i 8 metara.

Dakle, minimalna masa glavnog sidra je 10 kg, a promjer sidrenog lanca 8 ili najlonskog sidrenog konopa 12 mm. Masa pomoćno...

#KAKO ODABRATI SIDRO#ODABIR SIDRA ZA BROD#SIDRO BROD#KOJE SIDRO ODABRATI
15. svibanj 2024 10:21