Custom Engineering
A survey pole carries measuring equipment out clear of the hull, supported on a base fixed to the deck. The base carries a pivot so that the pole can be deployed and stowed — out when it is working, back in when it is not, rather than permanently occupying the ship’s side. That pivot is also where the structure takes its load: the bending moment of the deployed pole passes through it into the base, and from there into the hull by way of the welds and bolts at the deck, which is why the base is stiffened with gussets on both sides. Should the pivot clearances open up after repeated use, the pole no longer points true — precisely what the equipment mounted on it cannot tolerate.
The scope of work covers material preparation, workshop assembly and testing, delivery to site, and lifting into position and securing to the deck. The moving assembly is built up and actually worked in the workshop before it leaves, and the mating faces are dimensioned under workshop control, so little adjustment is needed on site. Pole length, base design and the method of fixing follow from the deck structure and the intended use, and material certificates are supplied with the work.
