Auxiliary Ships

[Delta Force]

I am looking at acquiring a large naval auxiliary in order to improve IRN long range and Arctic operational capabilities. I can easily calculate the fuel and ammunition capacities the ships need to support a given number of ships, but I'm not sure how I should calculate the need for food and other supplies. I am also wondering how icebreakers should be simulated since they are of very heavy construction even when compared to a battleship.

[Darman]

There are already rules for auxiliary tenders.  This sounds like it will be an auxiliary tender. 

[KWorld]

Based on what I can find on the historical icebreaker Yermak (from this period), you're looking at a ship of between 8-10000 tons, with 1.5" or heavier belt armor that's at least 20' in height, 10000 shp, and 4 shafts.

See http://www.science20.com/chatter_box/icebreaker_yermak-83623, https://en.wikipedia.org/wiki/Yermak_%281898_icebreaker%29, and http://www.uscg.mil/history/webcutters/Icebreakers.asp

[Tanthalas]

What he said more or less (and yeah as pointed out by Darman we already have these rules)

Based on what I can find on the historical icebreaker Yermak (from this period), you're looking at a ship of between 8-10000 tons, with 1.5" or heavier belt armor that's at least 20' in height, 10000 shp, and 4 shafts.

See http://www.science20.com/chatter_box/icebreaker_yermak-83623, https://en.wikipedia.org/wiki/Yermak_%281898_icebreaker%29, and http://www.uscg.mil/history/webcutters/Icebreakers.asp

[Delta Force]

I know about the auxiliary and tender rules, I was just wondering if there is a rule of thumb for how much food and other goods a ship requires. Calculating coal and munition requirements is easy, but I am unsure of how to find how much is being consumed of other resources.

[Darman]

You don't specify foodstores versus ammunition stores versus spare parts.  You can make up your own ratios if you desire. 

Tenders

A tender is an auxiliary which can supply all the amenities of a port, to some degree.  It generally carries accommodation space and amenities for crews of small vessels, workshops, warehouses, stores, and fuel.  Up to half of the weight of these facilties may be simmed as extra fuel bunkerage; the remainder may only be simmed as miscellaneous weight.  Regardless, it all counts as functional miscelleneous weight for the purposes of costing.

For every thousand tonnes of facilities aboard the tender, four thousand tonnes of shipping may use the tender as their "port". 

Tenders may conduct overhauls, basic refits, and basic repairs to ships so long as the work would not require a drydock.  If the tender has twelve thousand tonnnes or more of facilities aboard, it is large enough to undertake refurbishments as well.

The BP cost of a tender is like any ship built to merchantile standards - 0.25 * (Light Displacement - Non-functional miscellaneous weight).  The cash cost, however, is not quartered.

(Bolding is my own for emphasis)