Good evening all,
Over time i've been noticing distinct differences between, let's call them "Asian" and "Western (European/US)" tug designs.
I.e. what I call the "Japanese style ASD Tug" and the modern Robert Allan/Damen ASD designs, please see the attached pictures.
The Asian Vessel Design: Comparably high length to beam ratio for a tug, shallower draft, very flared bow with wheelhouse set quite far back. Relatively lower bollard pull and power compared to the euro designs, for a tug that is often longer than the comparable euro design. Doesn't appear to have a skeg to assist in conducting indirect and powered indirect towage. Somewhat shallower draft than Western Design. Rather "rounded" hull construction.
Western Design: ASD tug design philosophy most of us are familiar with. Smallest possible size with highest possible bollard pull and power, usually considerably more than the asian design. Capable of Indirect and Powered indirect towing. Somewhat deeper draft than Asian design but often not by much. Often simple single or double chine construction and slab sided.
So what I am getting at here, is what advantages does the Asian design still have compared to the Western Design? it's still popular in many Asian Countries, especially in Japan where they are still building them, including a new LNG Hybrid variant. They usually have lower bollard pull, are larger and don't seem to be capable of indirect towing?
I'm tossing up the two designs for my next tug build using a pair of Blue Robotics T200's, and while I find the look of the Asian design very appealing, I'm not certain which to go with.
Many thanks for your time,
Judgie