第六十六章 造船不是那么简单的事(2 / 2)

1635汉风再起 重庆老Q 1305 字 2022-05-19

因而,在建造远洋船只时,都会提前将造船木材进行阴干,阴干的时间是论年的,一般是三到四年。

在18世纪80年代后,英国曾硬性规定:龙骨与肋骨搭建好的船,必须在船台上自然风干一年,才能继续进行船体内外的板材铺设。这也是为了进一步降低船体材料的吸水作用。

“那有没有什么法子,可以缩短阴干的时间?”齐天虚心地问道。开玩笑呢,造个船,还得先等三年。那多耽误事呀!

虽然,可以找荷兰人去买船,但总不至于让船坞空置三年,让所有的船匠不能通过造船,积累技术和经验。实在不行的话,可以先去巴达维亚买造船的木材,然后自己这边赶紧挑选木材,进行阴干。

“现在,几乎所有的造船场都是将木材提前阴干的。如果想使用火烤来烘干木材的话,会造成木材开裂,更不适合造船。”另一个来自巴达维亚的明人工匠说道:“而且,好让总管大人知晓,建业城附近的木材,即使阴干了,也无法造大船。”

“为何呀?”建业城附近大片大片的原始森林,而且有些树木生长了几百年,有的还高达六七十米,怎么就不适合造船了?

“总管大人,建业城附近的树木,太硬了!”那个明人工匠答道:“木材太硬,打入铆钉,就会使得木材开裂,拼接船体肋骨时,可能就会产生许多裂缝,而裂缝多了,……”

裂缝多了,自然会进水,进了水,船就会沉。齐天有些颇受打击,合着,汉洲这地,就没合适的造船木材。就算能造船,也就造些几十吨的渔船,或者近海运输船。

“那造船一般都需要哪些树种?”齐天又问到。

“造船木材,第一是耐腐蚀,第二韧性要好,抗拉强度要高,太脆是不能用的,第三,要收缩率低,不能说泡了水以后,和泡水之前,船体变化太大,是不行的。”弗兰克·伊恩掰着指头说道。

“符合这些条件的树木倒是有很多,比如杉木、松木、柏木、柚木、榆木、赤木、樟木、楠木、楸木、梓木、槠木、桧木等。”那个明人工匠如数家珍地补充道,看得出来,他对各种船材了解还是比较详细。

“对面的新乡堡,好像就有很多柚木、樟木和楠木。”身后的一个声音突然插话道。

齐天回头,见是上次跟着牛进民从新乡堡返回的水手。

“我们下船后,还帮着那些移民砍了些树,其中就有樟木和楠木,附近稍远的地方还有柚木。至于还没有其他树木,那需要再往林子里面走走了。”

“太好了!”齐天兴奋地搓了搓手,“下次给他们送补给的时候,让新乡堡的人,多砍些树,稍微处理一下,就拉回来!”

“你们造船场继续用那些简单处理的木材造一艘稍大点的浆帆船,最好能航行到海对面的新乡堡。”齐天说道:“有了船往返两地,那些木材,拖也拖回来了!”

东南亚适合造古代帆船的除了樟木(海南台湾等地的量很大)外,东南亚的坤甸性能也相当好,坤甸也是樟科的,俗名铁樟木,古代和现在都多见于码头墩,这种树木在东南亚很多,量很大,缅甸,泰国所产的柚木做船板也是很好的木材,甚至做船板要比橡木还好,18~19世纪,英国没少从这个地区砍伐柚木运回国内造船。

当然,这些地方距离汉洲都太远了,唯一拥有大量造船木材,且距离近的似乎只有帝汶岛了。那么,为了以后的造船工业,新乡堡就必须要想尽一切办法来保住它了。

果然,一切的殖民活动,都来源于利益。

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