Somehow Towing The Line...I Mean Boat

There are not many of us who are actually aware of the fact that a large majority of the line fishery's vessels are illegally being carted from harbour to harbour along our busy roads with total disregard for public safety. This information contained here under was extracted from a concerned citizen's letter.

In an attempt to curb effort in the industry the DAFF imposed a vessel limit length of 10 meters. How was this done? Who knows? But all common sense went right out the window here. The department is an organ of state and responsible for the allocation of rights that conform to all legislation. It conveniently makes you have tax clearance certificates but does nothing about ensuring that they comply to road ordinance and workmen's compensation. Talk about choosing what to enforce and what not to at your convenience.

Due to their absolute lack of understanding of the industry they did  not realise that almost all ski boat type vessels over 7.5 meters couldn't possibly hope to meet the minimum requirements of the road ordinances act without serious investment and ridiculous maintenance costs. In actual fact it didn’t even seem to cross there minds to check this out and make a compromise in other fisheries even when told in the road shows.

In simple terms the road ordinance stipulates that all trailers with Gross Vehicle Mass (GVM) of over 750 kg be braked. Then when the GVM exceeds 3500 kg it cannot be on an override system (the trailer hook that slides and uses cables to activate brakes) but needs some form of power assistance that is SABS approved. If the GVM is over 5000 kg the trailer then needs to be further fitted with ABS brakes. (yes similar to your expensive cars). 

The reality of this is that there is no SABS approved braking system that will adequately stand up to the corrosive and erosive nature of the silt laden sea water in harbours where vessels are slipped. There are some smaller systems that on smaller trailers are maintainable but the larger units prove to be to costly. 

There is a solution but it is expensive and will take some time to approve. In America the use of aluminium as a general construction material is quite normal. Its mass to strength ratio are probably 30% lower than the steel commonly used here. They also use electrical brake actuators as opposed to mechanical or air assisted systems. Our problem is that SABS does not approve this system. This simply as nobody or any south African trailer builder has submitted one for testing… This because no one is prepared to fork out the money required by SABS to test them.  (The author here went on to explain that it was due to the association not being able to collect subs, let alone pick up the tab for the required testing)

Probably the most suitable vehicles for towing these large vessels are Ford F250 4x4 and Landcruiser 4x4. Pretty much all else is to expensive, does not have enough traction or just to expensive to maintain. Trucks are probably the answer, but prove to have to little traction as the slips are slimed over and at the lower end of the tides the rear wheels lose traction, (industry is market driven not tide) 4x4 trucks are to expensive and harbour facilities are not geared to accommodate the extra length vehicles. It must be suitably noted that the most practical vehicles, Land cruisers, GVM is to low to legally even tow the larger vessels, never mind pull them out of the water with loads of fish and crew, and Ford's F250 are expensive and require heavy duty drivers licences. Good luck standing in that que.

In terms of transport, an achievable solution for under 5000 Kg GVM trailers would be aluminium electrically brake assisted trailers that operate on a 5^th wheel principle. A 5^th wheel is similar to a horse and trailer where you remove the load body and fit a plate on top of the chassis similar to articulated trucks. This allows a 5000 kg trailer to be towed legally without ABS brakes. This is achieved by having 3500 kg supported by the trailer axles and 1500 kg supported by the vehicle's rear axle. Cutting things fine on land cruisers but definitely an option. This should be fine in theory until you consider the cost… would be great of government could facilitate a buy back of inadequate towing vehicles and supply these similar to the taxi program.

The electrical braking system is fundamentally an electro magnet that is resin impregnated to prevent water ingress. The only maintenance item would be the brake shoe itself.

All said and done, the government will need to promptly address this as its only a matter of time before its too late to effectively put the brakes on this issue.