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steering system changes

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psousa View Drop Down
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    Posted: 15 March 2023 at 18:18
Hi!

Anyone here did any changes to the original steering system of the Hanse 470e?

Actually mine is full dependent on one single roller chain + steel cable terminals. If this linking part breaks for some reason (for instance orcas/killing wales as they are ramming rudders since 2020, here on portuguese coast), we completely loose steering, including the autopilot which is actually a 12v Jefa sprocket drive unit therefore, also depending of this roller chain/steel cable link.

I was thinking on:
1. to have a spare link (roller chain + steel cable); currently waiting for material recommendations from Jefa to buy it according to the plan I have for 470, also from Jeffa);
2. change to a >=20 tons hydraulic ram/linear drive unit, directly connected to the quadrant or to the ruder stock (this way we can still use autopilot if we loose the wheels link);

What are your opinions about?
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Wild View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wild Quote  Post ReplyReply Direct Link To This Post Posted: 16 March 2023 at 19:20
If you have a killer whale attack on your rudder and itís broken you have nothing on a spare or double steering system Confused Sorry 
Wild and Wet
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JonB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB Quote  Post ReplyReply Direct Link To This Post Posted: 16 March 2023 at 21:39
Also there is a circular plate that you open with a winch handle and the L bar is inserted so that you have a hand steering tiller.

But agree with the Admiral, if they've bitten your rudder off there's nothing to turn and you'll need to set up a drogue system in order to steer, or play with the sail configuration, more akin to dinghy's than heavy yachts.
Jon B
470e
http://www.norse-king.blogspot.co.uk
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Ratbasher View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ratbasher Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2023 at 08:20
Rather than thinking about specific items, I'd suggest first considering what effect you want to achieve; what's the real issue to which you're proposing a solution?  The mission-critical effect we're considering here is maintaining directional control of a boat.  

Steering can fail either because of an issue in the linkages or because of damage/loss of the rudder.  It's a seamanlike precaution to plan for and test out alternatives for steering gear failures and the primary back-up is to use the autopilot which drives the steering quadrant directly (at least on the 400).  Next up is the emergency tiller - but I'll bet most owners have never actually tried to use this at sea; the basic one provided by Hanse in mine is virtually unusable without modification.

Then come the alternatives that Jon mentions above: trim the sails and/or stream a drogue; I'd argue that every vessel that goes offshore that wants to be taken seriously should carry a drogue with the crew practiced in its many uses.  However, the ultimate in redundancy is to be able to deploy a usable emergency rudder - either something created as a precaution beforehand or my own particular preference, Hydrovane self-steering although this may not be perfect in every instance.


Sorry that that's a long way to answer to address your question.  However, as for the point about attacks, I wonder if there's a business opportunity here for someone to create anti-fouling paint that tastes truly horrible to Orcas?!?


H400 (2008) now with a detachable keel as the refit drags on....and on.
Gosport UK 2022/23
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JonB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2023 at 21:14
Or may be we should see it from their point of view and not over fist their waters so that they have food to eat and not see net loads being dragged up into boats whilst they go hungry.

After all, sharks mistake surfers for seals, so Orca's mistake yachts as a fishing vessels, and the deployment of 'pingers', only fuels their anxiety.

The heads, have doors to the cupboards under the sink.  Screw and glue this to a broom handle and or a spinnaker pole and you have yourself a rudder.  You need to think outside of the box and everything on board should have more than one purpose, otherwise its taking up valuable space.
Jon B
470e
http://www.norse-king.blogspot.co.uk
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Ratbasher View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Ratbasher Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2023 at 07:01
Quite agree about seeing it from an Orca's perspective and the possible causes of the attacks; interesting to see (or so I understand) that such attacks have been restricted to Iberian fishing grounds.

Also agree about multiple uses for kit onboard, but a key point I was making is that the issue should be properly thought-through with options devised and practised before they're needed. My missus might have a few things to say about me b@st@rdising her cupboard doors on a nice day going across the channel!  
H400 (2008) now with a detachable keel as the refit drags on....and on.
Gosport UK 2022/23
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JonB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JonB Quote  Post ReplyReply Direct Link To This Post Posted: 19 March 2023 at 08:20
Needs must!

Although under the beds are access panels to the storage areas beneath. What I was trying to demonstrate is that as sailors, whose survival in such conditions, requires some quick thinking, also needs to think outside the box.
Jon B
470e
http://www.norse-king.blogspot.co.uk
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