Wreck Tour 167: The Scotia

Wreck Tour: 167 The Scotia
Wreck Tour: 167 The Scotia

Last Updated on July 6, 2023 by Divernet

This deep-lying bucket-dredger worked away through some 45 years of Victoria’s long reign but failed to outlive the Queen, sinking off south-eastern Scotland in the 1890s. JOHN LIDDIARD enjoys its machinery, while MAX ELLIS turns out another fine illustration

SKETCHING THIS MONTH’S Wreck Tour of the bucket-dredger Scotia began as a near-impossible task, then suddenly became easier.

Skipper Iain Easingwood had dropped the shot well ahead of slack, and we had impatiently dropped in as soon as it was slack enough to dive.

As I descended, it got darker to the point of being black, with less than 2m visibility. I had begun working my way round as much by feel as observation, and attempted some photographs.

It was only after 15 minutes, round about when I was deciding to call it a day, that the vis suddenly improved, as the water slackened fully and stopped dragging up silt from the seabed.

The wreck became a different dive, so I decided to do another lap. The visibility had risen to 5m by the time I had finished, and it was just about bright enough to see by natural light.

The shot had dropped against a box-section of hull (1), the only obvious target for an echo, and what I would later work out to be the port pontoon of the hull.

Working aft, the deck-beams of the pontoon soon break up, and an upright boiler (2) has fallen forward.
Dredging-buckets (3) rest on the back of the boiler, with another bucket propped against the inside of the port side of the hull.

Behind the boiler is the massive flywheel (4) of an old beam-engine oriented across the deck. The Scotia was a dredger of 1848 vintage, and I believe it was a simple unpowered iron pontoon barge with an industrial beam-engine mounted on the deck.

Attached to the aft side of the wheel is a connecting rod leading to the remains of a piston and rocker-valve assembly (5).

The aft of the barge is cleanly semi-circular, with ribs changing from a transverse to a radial pattern. Just off the starboard side is an Admiralty-pattern anchor (6). As a dredger, I expect the Scotia would have carried anchors in each corner to secure and manoeuvre the hull while dredging.

Level with the flywheel on the starboard side is a massive shaft attached to an equally massive gear-wheel (7).

A big flywheel on the dredging machinery
A big flywheel on the dredging machinery

This would have pulled the bucket-chain, with the rotation of the engine transferred and geared down by a set of bevelled gears immediately behind it (8). Inboard of this are a few more dredging-buckets (9) piled over the machinery.

Bevelled gears in the dredging machinery
Bevelled gears in the dredging machinery

The starboard part of the hull (10) is a box pontoon like the port side, with an initially open area soon superseded by ribs from the deck.

Between the split pontoons, a rectangular hole (11) provides a long gap through which the dredging-buckets would have been lowered and rotated to dredge the harbour silt below.

A pair of shafts with disc-shaped ends rest into this gap. Perhaps this is a mystery part of the dredging machinery – or maybe nothing to do with it. The term “dredger” covers a huge scope in ship design, all the way from a flat raft just big enough to float a JCB through to sizeable ships with steam-powered bucket systems, such as the St Dunstan off Dorset.

The split twin-pontoon layout of the Scotia’s hull suggests that it could have had a solid bucket-chain arm as on the St Dunstan, but there is no sign of such an arm, only a litter of buckets.

The rest of the machinery is iron, so if such an arm ever existed it would have been iron too. Could it have been removed to transport? Could it have been torn loose by the storm and lost away from the main body of the wreck? Could it be buried deep in the silt underneath?

anemones among the machinery
Anemones among the machinery

Or perhaps there never was an arm. The Scotia may have worked by dragging buckets on a cable in a rotating loop.

A little further forward, the port pontoon breaks up. Just off the port side is a simple A-frame anchor-winch (12), not unlike the kind found on many steam trawlers. Next to this is a hull-plate with a small porthole (13).

Heading back into the wreck, we pass a small fairlead and then just general debris of iron plates and ribs. At the forward extent of this debris is an obvious bow (14), and perhaps the folded tubular structure behind it (15) was another part of the dredging machinery – or perhaps that is wishful thinking, and it was a simple tripod base for a mast.

Dredging machinery
Dredging machinery

If you delayed starting your dive until well into slack water to allow time for the silt to settle out, the current will be beginning to pick up by now. The best method of ascent will likely be a DSMB.

DREDGING UP HISTORY

SCOTIA, bucket dredger. BUILT 1848, SUNK 1893

THE SCOTIA WAS AN 1848-VINTAGE dredger owned by the Arbroath Harbour Commissioners. Like many such dredgers, she was essentially a pontoon barge with an engine and dredging machinery bolted on top.

The quoted displacement of 50 tons belies the size of the wreck, and probably relates to a calculated enclosed space, rather than the actual displacement.

The Scotia’s working life would have consisted of weeks or months spent dredging silt from the harbour at Arbroath while being manoeuvred by anchor and line, then packing up and being hired out to other harbours in the region, making the journey under tow by a steam tug.

On 21 February, 1893, the Scotia was under tow from Eyemouth to Granton and was overwhelmed by a north-easterly force 6 wind, about seven miles off Dunbar. The fate of Captain Brown and his crew of nine is unknown.

The wreck was first dived from Ian Easingwood’s boat in 2006, and identified as the Scotia through being the right type of vessel of the right size and age, but not the Cyclops (which is the only other large bucket-dredger known to be wrecked nearby).

The Scotia Wreck Tour
The Scotia Wreck Tour

TOUR GUIDE

GETTING THERE: Eyemouth is on the A1107, just off the A1. Once in the town, follow the signs for the harbour. As you enter the harbour area, ‘The Harbourside’ is on the north side.

HOW TO FIND IT: The wreck sits mostly upright on a flat seabed with bow to the north-east. GPS co-ordinates are 55 58.30N, 002 18.60W (degrees, minutes and decimals).

TIDES: Slack water is three hours after high or low water at Eyemouth.

DIVING & AIR: Marine Quest Boat Charter operates from Eyemouth, 01890 752444, It has a full gas facility at the Harbourside.

ACCOMMODATION: The Harbourside has bunk-room accommodation, lounge, TV, free Internet access and a very efficient drying room for kit.

LAUNCHING Slips at North Berwick, St Abbs and Eyemouth.

QUALIFICATIONS: A deeper-than-usual wreck best suited to those with technical qualifications such as Advanced Nitrox or Decompression Procedures.

FURTHER INFORMATION: Admiralty Chart 175, Fife Ness to St Abbs Head. Ordnance Survey Map 67, Duns, Dunbar & Eyemouth. Berwickshire Dive Tourism Association, Shipwreck Index of the British Isles, Vol 4, by Richard & Bridget Larn.

PROS: The listed displacement of 50 tons belies the size of this wreck. Some great machinery, with the remains of a big beam engine and gearing.

CONS: Fine silt lifted by the tide means that visibility improves as the tide slackens and deteriorates
as the tide picks up again.

DEPTH: 35m -45m

DIFFICULTY RATING:

Thanks to Iain Easingwood and Jim Easingwood.

Appeared in DIVER October 2012

This week, it looks like DPV manufacturer ScubaJet has begun insolvency proceedings. PADI has distributed half a million dollars in their Project Aware campaign. Dorset coastguard have called off the search for a missing diver. And the Pearl Fleet has commented on a viral video of a shark-dive that didn’t go so well
https://taucher.net/diveinside-insolvency_proceedings_at_scubajet-kaz9246
https://divernet.com/scuba-news/conservation/padi-aware-distributes-500k-in-mission-hub-grants/
https://www.scubadivermag.com/raid-launches-ots-full-face-mask-programme/
https://www.scubadivermag.com/dorset-coastguard-call-off-search-for-diver/
https://divernet.com/scuba-news/health-safety/search-for-diver-off-dorset-stood-down/
https://divernet.com/scuba-news/health-safety/pearl-fleet-hits-back-as-maldives-shark-dive-slammed/
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This week, it looks like DPV manufacturer ScubaJet has begun insolvency proceedings. PADI has distributed half a million dollars in their Project Aware campaign. Dorset coastguard have called off the search for a missing diver. And the Pearl Fleet has commented on a viral video of a shark-dive that didn’t go so well
https://taucher.net/diveinside-insolvency_proceedings_at_scubajet-kaz9246
https://divernet.com/scuba-news/conservation/padi-aware-distributes-500k-in-mission-hub-grants/
https://www.scubadivermag.com/raid-launches-ots-full-face-mask-programme/
https://www.scubadivermag.com/dorset-coastguard-call-off-search-for-diver/
https://divernet.com/scuba-news/health-safety/search-for-diver-off-dorset-stood-down/
https://divernet.com/scuba-news/health-safety/pearl-fleet-hits-back-as-maldives-shark-dive-slammed/
Diving Into The Darkness Link:
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Diving Into The Darkness Website:
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@emilyZA460
#AskMark hi! I was hoping you could help me understand the interchangeability of a DSMB and a simple SMB if I only plan to use it when I deploy it during my safety stop at 5 meters. I used the simple version for this purpose during my last liveaboard and despite occasionally having to reinflate at the surface due to some air escaping while being deployed underwater, it didn’t seem to be too problematic and so I was wondering if it’s necessary to have a DSMB for this purpose? The issue for me is that somehow I tend to end up misplacing my SMB quite often and so the price difference between the two makes it a more acceptable loss when it’s replacing the SMB regularly rather than the DSMB at double the cost
#scuba #scubadiving #scubadiver
LINKS

Become a fan: https://www.scubadivermag.com/join
Gear Purchases: https://www.scubadivermag.com/affiliate/dive-gear
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We partner with https://www.scuba.com and https://www.mikesdivestore.com for all your gear essentials. Consider using the affiliate link above to support the channel.

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