Finally the survey report has come through,(34 pages of a detailed report of photos, charts and a language anyone cauld understand) it makes interesting reading and at most great news, wish I could show you.
The summary:( quote)Documentation confirming nominal plate thickness was not available, but ultrasonic thickness testing indicated the following as the probable original nominal plate thickness for the main components of the vessel, where small sections vary this is shown in the readings below:
Bottom & side plates 5mm
Counter (uxter) plate 6mm
Swim plates 4mm
Supperstructure 3mm
(NOTE)The actual original plate thickness may vary slightly from the nominal thickness, so its not uncommon for the original thickness to be a few 10ths of a millimetre or thinner than the recorded nominal thickness.
Readings tacken from the bottom plating range between 4.1mm and 5.0mm. This represents a maximum diminution in plate thickness (excluding pitting) of 18% from original thickness of 5mm
Readings from the side plates range between 4.5mm and 5.6mm. This represents a maximum of diminution in plate thickness (excluding pitting) of 10% from original thickness of 5mm.
Readings taken from the counter plate range between 5.5mm and 5.8mm. This represents a maximum of diminution in plate thickness (excluding pitting) of 10% from original thickness of 6mm.
The chine plates at the bow and stern sections are not integral with the side and bottom plating as is the case in the mid section of the vessel, but are separate plates. these are separate chine plates at the stern and at the port bow(but not the starboard bow) have been fabricated from 4mm plate and are therefore thinner than the rest of the hull plating.
Assuming pitting at the thinnest points of the hull, this would leave a potential minimum thickness of metal of 2.1mm at the bottom of the pit on the bottom of the plating and 2.5mm on the side plating. on the thinner chine plating fore and aft minimum potential thickness of metal is 2.2mm.
It does go on with drawings, charts and more detailed info, he reports that the superstructure and hull are in sound condition. Recomendations are minimum to Crippin, Anodes, blackening, change seacock and rudder bearings.
Ill sleep well knowing this.
Who says these Springers are cheap pieces of scrap metal made to float? Quality steel obviously