Boats and ships can be joined as single-point ties with each other or with other still lifes featuring a pre-block protrusion. Tubs/barges and boats can also be joined with each other as two-point ties, but this will only produce a longer vessel.
The block can be considered a degenerate ship of length 1, aside from the fact that it cannot be used in ties.
While vessels resemble a wider version of single-fuse strings, crucial differences result from the fact that the cells in the diagonal body already have three neighbors. No components can be attached to the body of a vessel, and although ships/boats can be joined as ties, they cannot be siamized in the same way other still lifes with preblock endings can. Sometimes a fuse body can be siamized lengthways with a vessel body though: e.g. a loaf can be siamized with a barge to result in loaf siamese barge, and a long barge can be siamized with cis-fuse with two tails to yield a barge with two tails. Larger examples will become increasibly non-intuitive.
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very long ship