Damen recently delivered two conventional tugs, the 22.5m Don Jose Maria which is a StanTug 2207 and the 30.3m StanTug 3008 Walvis 9, writes Robert Lennox. They have some similarities, both being powered by Caterpillar engines, driving through Reintjes gearboxes to Promarin fixed pitch propellers running in nozzles. Bollard pulls are just under 35 t and speeds over 12 knots in each case. It is interesting to note that, with two superficially similar tugs, the machinery layout is different. The smaller craft has its gensets and fire fighting pump mounted aft of the main propulsion engines, while the situation is reversed in the other vessel with the auxiliaries mounted ahead of the main engines. Walvis 9 has the addition of an electrically driven bow thruster.
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机译：罗门·伦诺克斯（Robert Lennox）写道，Damen最近交付了两种常规的拖船，分别是2250万的Don Jose Maria船（StanTug 2207）和3030万的StanTug 3008 Walvis 9。它们具有一些相似之处，两者均由卡特彼勒发动机提供动力，通过Reintjes变速箱驱动到在喷嘴中运行的Promarin固定螺距螺旋桨。在每种情况下，系船柱牵引力均小于35吨，速度超过12节。有趣的是，对于两个表面相似的拖船，其机械布局是不同的。较小型的飞船的发电机组和消防泵安装在主推进发动机的后方，而另一艘船的情况则相反，辅机安装在主发动机的前方。沃尔维斯（Walvis）9增加了电动弓bow推进器。
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