第一百二十八节 400料广船
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第一百二十八节400料广船
文德嗣跟着张机器去看船。龙腾小说ltxs520.com西洋船模文总造过不少,中国海船出于兴趣也稍微涉猎过。令文德嗣比较不满的一点就是国内对这方面的研究远不如国外多、不如国外专业,甚至中国古船的模型也是国外收藏较多。能看到的资料非常少。
船场没有干船坞,是直接放在船架上的。文德嗣知道干船坞的历史最早可以追溯到北宋,熙宁年间修理龙舟就是这个方法,但是后来使用的人似乎并不多,基本算是孤例。要不是沈括的记载,恐怕多数人都不知道有过这事情。”
“这船如何下水?”文德嗣对古代没有滑船道没有船坞的情况下如何下水很有兴趣。
“用稀泥涂满滩头,再用绳索牵拉就可以了。”
真是简单。文德嗣点点头,所谓人民群众的智慧是无穷的,并不是一句空话。
这艘船的进度已经差不多完成了七成,船体已经成型,不过没安装甲板。凭借他有限的一点古船知识,文总看得出这是一艘所谓的“广船”。它在中国古代海船中属于大型船,船体上宽下窄,船尾有虚稍。最大的特点是有在中线面处有深过龙骨的插板。这块插板起到了减缓摇摆和横漂的作用,是广船的一大特色。尺寸上大约属于四百料船,这是明政府允许民间建造的最大船只了。虽然中国的船工毫无疑问有能力造千吨级的大船,但是船只过大操作起来很困难,已经没有什么实际意义了。
文德嗣目测下长度,船长大约27米,宽5米多,粗略估计了下排水量是70吨。这和他们手中掌握的其他400料船几乎一样。可见400料船已经有了一定的标准。文德嗣问张机器,他造船是不是用的船书,张机器满面尴尬,红着脸说:“没有船书”。
文德嗣知道他要保守自己的技术秘密,心想不把你震服帖了,怕是以后躲躲藏藏的还有许多啰嗦,清了下喉咙,用广东话报出了一连串数字:
“400料战座船,长8丈6尺9寸,宽1丈7尺,用工2487,……”
话音未落,张机器已经普通一声跪倒在地,满脸惶恐:“大……大……人……”
文德嗣说:“起来吧,怕什么?!”
“大人原来都知道――”
“待你到了博铺,看了我们的大小铁船,才知世间的机巧之物的精深。一本船书算得了什么!”文德嗣心想这不过古船爱好者们最基本的资料读物《南船记》上的东西。
“是,是。”张机器知道这位老爷是大内行,又听说有完全不一样的铁船可看,心里早就按奈不住,介绍起船只来也变得痛快多了。
这艘即将完工的船只是双桅船,船体使用的杉木,这个和文德嗣记忆中的资料不同,他记得书上说到广船的特点就是“铁力木”为之,他们缴获的伏波号也是广船,虽然没用铁力木,也用了同属硬木的荔枝木。
面对文德嗣的询问,张机器说这完全是成本问题,铁力木的价格高,杉木又多又便宜,强度也还过得去。据他说这是广东那边的一家海商订购的,每次去南洋贸易都买艘新船,不求船好,只要能安全到达就可以,到了那里就连船带货全部卖掉,再搭其他船回来。所以船差不多就是一次性的,用料能省就省,只要便宜就是。
“这样一艘船要多少银子?”
“行价八百两,若用好木材,再加二百两。”
这么说一艘船的价格就在一千两了。看来海军果然自古以来就是烧钱大户。造船的事情,还是要引入民间资本比较好。
这艘船从结构来看,全船由12道舱壁将船体分隔成13个船舱,舱壁板是用大的樟木板制成,厚度在10厘米以上。这就是中国古帆船最领先世界水平的结构:水密舱。水密舱壁与船体外板交界处都有抱梁肋骨并用铁钉固定。在舱壁和抱梁肋骨在靠近船底的地方开有两个流水孔,这让文德嗣有点惊讶――开了流水孔,这个水密舱还怎么防水呢?
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