The Twin Keels were an economical option for stabilising the ship for better comfort on force 4 + sea states. These conditions can bring swells and roll the trawler dramatically side to side.

The keels will drag the trawler still with Keel feet, fins. They work as anti roll components, holding the trawler like a ice skateing boots, as she is underway, stopped or making way.

Finally, with the additional propeller guards and shaft support, they enable the trawler to make landings on anchoring beaches and coastlines.

That’s Darwin for you.

These additions were exciting and also promise to improve the trawlers performance with more stabilised cruising. However, there were a couple dangers to identify.

The first was the base of the keels being inefficient without a bulb or fins at the base of the keel to add tred in the water.

The second was to have the propellers unguarded from landing and the shafts at risk of bending.

These were compensated for with fins at the base of the keel and a propeller guard attached to the belly of the hull. The guard here will support the weight of of the trawler without straining the twin shaft mechanisms.