第13章从渔船开始大航海(1 / 2)

纵帆船和横帆船的受风力相反,纵帆船顺风时是利用风差力拉着船航行的,所以顺风航行航速反而慢,横帆船是风力推着船航行的,顺风反而快,所以横帆船航行受季风影响,不能一年四季都航行。

纵帆船的帆是利用伯努利效应,用来借侧风和逆风的,所以侧风和逆风时反而航行的快,一年四季都能航行。

但只适用于小吨位的船,因为风帆总面积与横帆相比差很多,就算装在大船上大船也跑不快。

有一个牛人通过设计,解决了船高速航行时,船底产生的水泡效应的阻力,让小小的一艘单人纵帆船航行出60多节,超过110公里的时速,简直就像在水上飞一样。

大体设计图画好,杨浩再琢磨了一下各项主要数据,再把数据转换成当下的丈、尺、寸,反正只是排水量连一吨都没有的小船,随便设计设计得了。

“心恒兄,论造船小弟完全是外行,您给涨涨眼,看这种船有没有什么问题。”杨浩放下笔请教道。

张掌柜踌躇着不知道怎么说:“这个嘛,杨兄弟,龙骨和肋骨有点密了,不需要那么多,还有太粗了,我看你算数不错,要是这样的尺寸的话,你算算整艘船的木料共有多重。”

杨浩一愣,答应后仔细算起来,先算各种木料的体积,再乘以密度,按一般木材密度0.7吨每立方米来算,最后得出整艘船共重900多斤……

这就很尴尬了!

“呵呵,心恒兄……”

“不下于850斤吧?”

“呵呵……900多斤……”

这张掌柜肯定是个技术宅,说话也太直了点,俺脸都烫的不行了。

张掌柜看出了杨浩的尴尬,自己也尴尬着道:“渔船嘛,不用那么结实,龙骨肋骨这么密可以,不过都减一半粗,重量只有原来的两成半。

船板甲板再减薄一些,能减轻一两百斤,龙骨和肋骨之间用斜木加固,桅杆下粗四寸,上粗两寸半,用绳子从船头绑到桅杆顶,再绑到船尾,足够结实了……

重量能减轻到550斤左右,主要是生铁管子比较重。加上压舱石170斤,一共720斤。然后装货嘛,就得少点了,恐怕最多只能连人带货装800斤。”

杨浩傻眼,这个设计图虽说不是随手涂鸦,但差距也太大了吧?

“心恒兄,你看要不把肋骨减少一半,隔6尺多一根,就能多装百八十斤的货了……”

“可以,要不船宽加宽两尺半,增加不了几十斤木材,却能增加两百斤装货,还能让船行的更稳,就是速度稍微慢了点。

船底形状稍微修一修,船舷加高一尺,能多装两百斤货。船板和甲板再减薄一些,能多装一百来斤货,如此可还行?”张掌柜指着图道。

“那还结实吗?”杨浩有点忐忑。

“肯定结实!老弟,你画的这个图结实过粪了知道吗?刚才我说的用料才是一般用料厚度,更何况你这设计更巧妙。”

“那我就放心了,心恒兄算算得多少银子,多久能造好?”

张掌柜想了想不好意思道:“按理说,你这个设计给了愚兄很多启发,照这样的设计,一般一千料(大概250吨排水量)以下的小船漕船不仅能航行的更快,还能逆风航行的更快,这算是偷师学艺,愚兄不该收你钱的……

可这个造船作坊不是愚兄家里产业,而是愚兄舅舅家的,不能让舅舅太亏……还有近期生意不好做,作坊难以维持……生铁不便宜……”

杨浩打断道:“心恒兄的为难小弟已知晓,不会让心恒兄难做的,你给个实在价就行!”

张掌柜感动的拍拍杨浩肩膀道:“多谢兄弟!愚兄估计这艘船的造价大概在4200文到4800文之间,毕竟以前没造过,算不到那么详细。

愚兄既然偷师学艺了,就不能不有所表示,愚兄自掏腰包一部分,算兄弟3500文好了!”

“不能够,不能够,还是算4200文好了。”

“不用,就3500文!”

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