• http://www.sjgames.com/errata/gurps/4e/spaceships_1.html
• http://www.sjgames.com/errata/gurps/4e/spaceships.html

Airlocks: The table on p.42 and the Free equipment box on p.10 have different sizes for airlocks for SM 6-15 ships.

seems to have wrong listed load of 301 as it has 6 cargo for 300 tons, 43.5 cargo in the tertiary battery and 20 people. The correct load should be: 345.5

Also the price seems to be wrong:

Is only 42.5 million with the listed price of 44.5 million.

The $4000/ton price of Jet fuel on spaceships p46 seems way too high.

Of course such values will depend on how plentiful such is in the setting but it is off by a factor of >10 compared to 2016 refinery prices. The monthly average refinery price of jet fuel/ton has varied from 350 to 450 usd. That corresponds to about 280 to 360 Gurps dollars. As comparison the prices for liquid hydrogen and rocket fuel seem about right for current prices.

So in a fairly plentiful oil scenario like current earth 1/10 of the price or $400 would seem fairly good approximation.

As a side note: The $400/ton would make the Molniya-class ramjet from spaceships 8 more reasonable. At $4000/ton the fuel cost would be almost $12000 each and yet the Transhuman space base book says that such transit costs $2000, so the $1200/passenger fuel cost would make it closer to that $2000 in total expected operating costs.

Is listed as TL 9^ but does not seem to have any super science systems.

Is listed as both TL 10(table) and 11(top) but the single reactionless engine is listed as 2G that is a TL 11 feature, so likely should be TL11^

Lists two items for rear slot 6: its third stardrive, and an Engine room. The stat-line also reflects both: It has range x3, and an HT of 13.

The force screen is not listed in the table DR field.

Not an errata, but if using half systems then installing half size power plant would allow 3000 ton more cargo and installing a much smaller habitat and the remaining in cargo would allow bit more cargo as well totally.

Is listed as having:
Hot Reactionless Engine (50G acceleration) and Move 50G/c

But Hot Reactionless engine only has 2G/c acceleration. So the engine is Super Reactionless not Hot Reactionless or the acceleration in only 2g/c

Has seven 500 ton Cargo Holds, 200 tons cargo in the Secondary Battery, 200 tons cargo in Habitat, a 300 ton Hangar Bay and 28 people for a total load of 4202.8 tons not the listed 3,142.8 tons

Not an errata, but if using half systems then installing half size power plant would allow more space for other things.

Has only two stardrives and the power to drive only two high power systems and yet the range is listed as 3x, should thus be 2x

The single drive is rated 100g/c, should be 2g/c as is hot reactionless.

Rear hull section has a habitat with five luxury cabins, 180 cabins and a 20-bed sickbay. That is total of 210 cabin units of the 200 possible.

The load and occupation ratings are wrong. Like they front hull “Habitats (two luxury cabins, 10 tons cargo” is only counted once in the table as it dies not have “each” in the description so the table values are missing 10 tons of cargo and 4 people. Thus the occ should be 20 and load 82.

The table is missing ^ in TL field as the 10^ is the correct TL

Is listed as SM +9 craft with 100 dST/HP in the vehicle entry, but is really SM +8 and 70 dST/HP.

is listed as 8ASV despite having a calculated: 4 staterooms(=8) and a cage(=4) 12 total.

Listed as having 3+3 luxury staterooms and 4 staterooms but only Occ 14ASV when the total should be 20ASV.

The price is obviously wrong, just the cloaking device is 30 million and the two teleport projectors are 20 million each so more than the total of 65.7 million.

Baikonur Third Stage STV is listed as TL 8, but has control room computer and sensors calculated as TL7 and has no other components that are above TL 7, so should likely be TL 7.

Not really an errata as such more an observation. In the end the first stage is thus controlled by a control room 2 sizes too small for it. Should this not cause a penalty?

Also the question of needing armor for streamlining, the whole stack does not fill that need.

The total delta-v value is wrong, it uses 13 tanks of HEDM that would have a d-v of 0.5*1.6=0.8/tank for a total of 10.4 mps.

Definitely not an errata, but an observation: This is a very inefficient design with way too many armor systems, a huge control room when compared to as example the Bainokur stack and way too much fuel for the most likely mission of lifting things to low earth orbit as high earth orbit and escape velocity are more likely better served by something with lower thrust and higher impulse.

A modified version could carry 300 tons to low earth orbit easily. (-2 armor, -1 hangar, -2 fuel, +5 cargo), 7.7 mps and if using a smaller control station and dropping 1-2 more fuel tanks up to something like 430 tons at the upper end.

Has 1 module with 80 hibernation chambers and yet lists “Plus 200 in suspended animation”, should be “ Plus 80 in suspended animation”

It has a listed load of 172.6 but has a cargo module at 150 tons, two 100 ton hangar bays, 10 ton steerage cargo and 206 total people for load: 380.6 tons.

Has listed airspeed of 2450mph, but at 3 modules of 0.5g each it should be 3100mph

Definitely not an errata, but an observation: This design is also inefficient due to too much armor.

A variant with -2 armor could lift 25 tons and a cargo version without passenger seats could carry 30 tons.

Definitely not an errata, but an observation: This design is also inefficient due to too much armor.

Is missing one module, it only has 19 total as it only has one core module.

Has as module 6 in front hull: Hangar Bay (three tons capacity). A SM +5 single module hangar bay is 1 ton.

The total load is also wrong 8 cargo*1.5 tons=12, add 1 ton bay and 0.6 from passengers and you get 13.6 tons, but adding the last module as extra cargo +1.5 tons gives a total of 15.1 tons.

The load is wrong it has 2 cargo holds*50 tons, 45 tons in the battery and 5 tons in habitat for a total load of 150.8 tons.

The force screen is not listed in the table DR field.

Lists two items for rear slot 6: its third stardrive, and an Engine room. The stat-line also reflects both: It has range x3, and an HT of 13.

Lists load as 201.8 tons, but has 300 ton hangar, 200 tons in the habitat and 18 people as load thus total should be 501.8 tons.

The descriptive text says: “The barge’s interior is devoted to 255 tons of cargo capacity.” But the correct cargo capacity is 85 tons.

Collision formula on page 32 seems to produce too high values. Collisions according to the formula do about 3.6 times the value they should do. Just use the Spaceships p.64 formula to fix.

Is missing module 5 in central hull.

Has 2 Fuel tanks with 15mps listed delta-V each but the table says 1G/15 mps. It should be 1G/30 mps or if the missing module is fuel tank 1G/45 mps.

Sword-Class Heavy Cruiser in SS3 page 14. The stat-line is listed as having a DR of 100/100/50, but the design has 140/140/70 (which seems to fit the actual stats for streamlined diamonoid)

Also, it has 10 fixed rear-mounted missile launchers. Does it expect to be running away often? and if so why is the rear armor weakest?

The crew listing has “plus all necessary small craft pilots and flight crews.” But it does not carry any small craft as it has no hangar bay or external clamps.

Has a single Fission Reactor providing one Power Point, but two high energy systems (Major Battery and Secondary Battery), so it should have a note saying it cannot operate both at same time. Alternatively upgrading the fission reactor to a Fusion reactor would solve the problem.

The price is obviously wrong. A quick calculation would indicate 1,901.5 million could be the right ballpark instead of the listed 1,901.5 billion.

Has only one core system. Fixed by adding an extra Fuel Tank

Has only one Solar Panel Array. So needs the note “Cannot use Mining and Nanofactory modules at the same time”

Note: Swapping one of the Science Arrays(There is really no need for more than one) to a second Solar Panel Array would allow both to be operated at the same time.

Emergency Ejection System not allowed in Core Control Room.

The ATR rocket is listed as giving 0.2g/module for a total of 0.6g. But the basic ATR at TL 10 give 0.2 with hydrogen and using water instead you get 0.6g/module for a total of 1.8g.

It is also noted as “This is a compact, single-stage-to-orbit vehicle using anti- matter rocket engines to achieve high performance. This permits landing and takeoff from high-G worlds. It is designed to glide in for a landing from orbit, but it can operate from a vertical position”

But its ability to operate in high-G worlds is severely limited by the low D-v.

The d-V is just enough to reach low orbit of 1g planet with a minimal reserve for docking maneuvers,de-orbiting and similar, so it could not operate from larger planets. So no “high-G” world capability and only limited earth size world support requiring an atmosphere for landing or orbital refueling.

Says that: “Personnel include four control crew, six scientists, and one technician.” and yet it has life support only for max 6 people.

Simple solution is to swap out the three cabins with total life support with something giving more such. Just using 6 cabins allows for that to be carried but maximally one more person. Three cabins and three bunk rooms would allow it to carry the normal crew of 11 and have extra space for maximally 7 others.

Is listed as TL 8 in the title and TL 9 in the table. Given the C6 (10 base -4 for tl 8) of the computer in the control room and no components requiring TL 9 it seems like TL 8 is the correct one.

Has one FTL drive but listed range of “-” The range should be “1x”

Station requires 60 technicians; need to increase accomodations to facilitate them.

Occ is 14ASV but the crew breakdown lists 19 crew. The easiest fix is to add 4 more cabins, reducing Steerage Cargo to 9,880 tons.

Has 3 factory modules total each requiring a power point, but only 2 power points produced: Solar Panel Array (one Power Point) and Fusion Reactor (de-rated; one Power Point).

The simple fix would be to replace the de-rated Fusion Reactor with a full version. At minimum it would require a note that only 2 of the factory modules can be operated at the same time.

Can't have Weapon Battery in [Core]. Easiest fix is to swap the [Core] Smaller SM System with one of the Fuel Tanks. Alternatively replace the Weapon Battery with a Fuel Tank and add a Smaller SM System in the hull with one Weapon Battery and two Smaller SM Fuel Tanks.

Fusion Rocket require SM+9 at TL9. Ship must be TL10. Rear Smaller SM Light Alloy Armor has only dDR 2.