Roger. My take is congruent with Evyn's. A gantry crane for something you
can put into a wimpy little 747C or the lower deck of a passenger-carrying
7X7 is nothing compared to a gantry crane for a Maersk-scale container.
Nonetheless, my point on the colossal wasted space with the LCS RHIB
handling system still stands, stuff requires space.
> On Mon, Mar 2, 2015 at 10:38 PM, Derek Stanley
> [Traveller_TNE] <> wrote:
>
>>
>>
>> This is all off the top of my head but I have 15 years of experience
>> with
>> intermodal containers.
>>
>> Don't forget the dimensions of the grapple for picking up the can, that
>> needs cable attachment points, can clocks, hydraulics for activating the
>> can locks. Plus a little free space for error and maintenance. Granted
>> the heft of the lifting frame is going to be less than what we have now
>> but
>> a ceiling gantry is a pretty massive piece of kit.
>>
>
> That's ok, most of my experience is with Maritime shipping and Ships gear.
> The strong backs in the foundry I once worked in where only about a meter
> tall and they routinely dealt with 50 ton ingots. But they didn't have the
> gear to deal with containers...
>
>>
>> A standard intermodal currently is 53'L x 8'6"w x 9'6"h
>>
>
> Which isn't being transshipped overseas as of a couple of years ago. 90%
> of
> the trade is in 40 foot boxes.
>
>
>> The USDoT is currently piloting a 60' long can, the problem is at that
>> length they take up 3 lanes of road to take a right hand turn without
>> encroaching on the corner. At 60' long you're running a smidge shy of
>> 10dt. Cans do come in 10', 20', 40' and 48' denominations too, but lets
>> not get to excited by those just yet. They also come in 8'6" and 10'6"
>> heights too...
>>
>> What this means is the front to back dimensions of the gantry and the
>> can
>> grapple have to be capable of adapting to different sized containers,
>> because lets face it no supercargo worth his salt is going to want to
>> take
>> on 2dt worth of cargo in a 10dt box.
>>
>
> But we arguing details here, If a ship needs gear to service its market it
> will have it. What I am pointing out a lot of the PC scale ships probably
> won't be doing that much in the way of container traffic. The Freetrader
> is
> the interstellar equivalent of modern day trade Dhows in the Indian Ocean
> Trade.
>
>
> --
> Evyn
>
can put into a wimpy little 747C or the lower deck of a passenger-carrying
7X7 is nothing compared to a gantry crane for a Maersk-scale container.
Nonetheless, my point on the colossal wasted space with the LCS RHIB
handling system still stands, stuff requires space.
> On Mon, Mar 2, 2015 at 10:38 PM, Derek Stanley
> [Traveller_TNE] <> wrote:
>
>>
>>
>> This is all off the top of my head but I have 15 years of experience
>> with
>> intermodal containers.
>>
>> Don't forget the dimensions of the grapple for picking up the can, that
>> needs cable attachment points, can clocks, hydraulics for activating the
>> can locks. Plus a little free space for error and maintenance. Granted
>> the heft of the lifting frame is going to be less than what we have now
>> but
>> a ceiling gantry is a pretty massive piece of kit.
>>
>
> That's ok, most of my experience is with Maritime shipping and Ships gear.
> The strong backs in the foundry I once worked in where only about a meter
> tall and they routinely dealt with 50 ton ingots. But they didn't have the
> gear to deal with containers...
>
>>
>> A standard intermodal currently is 53'L x 8'6"w x 9'6"h
>>
>
> Which isn't being transshipped overseas as of a couple of years ago. 90%
> of
> the trade is in 40 foot boxes.
>
>
>> The USDoT is currently piloting a 60' long can, the problem is at that
>> length they take up 3 lanes of road to take a right hand turn without
>> encroaching on the corner. At 60' long you're running a smidge shy of
>> 10dt. Cans do come in 10', 20', 40' and 48' denominations too, but lets
>> not get to excited by those just yet. They also come in 8'6" and 10'6"
>> heights too...
>>
>> What this means is the front to back dimensions of the gantry and the
>> can
>> grapple have to be capable of adapting to different sized containers,
>> because lets face it no supercargo worth his salt is going to want to
>> take
>> on 2dt worth of cargo in a 10dt box.
>>
>
> But we arguing details here, If a ship needs gear to service its market it
> will have it. What I am pointing out a lot of the PC scale ships probably
> won't be doing that much in the way of container traffic. The Freetrader
> is
> the interstellar equivalent of modern day trade Dhows in the Indian Ocean
> Trade.
>
>
> --
> Evyn
>