For sure Graham will know more than most about the builder/designer. For info the boat was owned and driven by John Tussaud, from the famous Wax Museum family. Here's a pic of it from my archive. I think the pic posted earlier was when the boat was re-named Titus-L. Maybe from 1975? I think my pic was from 1974 when the boat was known as Sunpropulser. Flying Fish - give us the heads up!

Most of it`s sparse history has already been commented on in this post,although a few extra pieces of info are as follows.

Built 1973 as Sunpropulser to owners own design,presumably on his days off from the waxworks.Not much known about Copeland the builder.2 x Westlake Chevrolets total 1100hp.33ft oa.Re-named Titus L in 75 and fitted with 2 x Mercruisers total 1100hp.
For ref his previous boat was one of the green Aronow Magnum 28`s,which no doubt was on his mind when he did his own thing.

You can view film of it in the 73 & 75 Offshore films on Boatmad.com.

For anyone unaware - checkout Flying Fish's multimedia page (Graham's offshore Library) over on www.boatmad.com for some more wonderful old school pics like the one of this boat that started this thread!