Amendment 001.doc

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Transportable Port Security Boats (TPSB)
Solicitation number
HSCG23-09-R-MNQ227
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Amendment 001

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1. CONTRACT ID CODE

PAGE OF PAGES

amendment of solicitation/modification of contract

1
1
2. AMENDMENT/MODIFICATION NO.
3. EFFECTIVE DATE
4. REQUISITION/PURCHASE REQ. NO.
5. PROJECT NO. (If applicable)
Amendment 001
July 27, 2009
6. ISSUED BY
CODE
7. ADMINISTERED BY (If other than Item 6)
CODE

USCG Headquarters

1900 Half Street, S.W., Washington, DC 20593

Suite 1100/Office No. 0234 (CG-9122)

8. NAME AND ADDRESS OF CONTRACTOR (No., street, county, State, and Zip Code)
(x)
9A. AMENDMENT OF SOLICITATION NO.
Transportable Port Security Boat (TPSB) Offeror(s)
X
HSCG23-09-R-MNQ227

9B. DATED (SEE ITEM 11)

July 10, 2009

10A. MODIFICATION OF CONTRACT/ORDER NO.

10B. DATED (SEE ITEM 13)

CODE

FACILITY CODE

11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS

[ X ]The above numbered solicitation is amended as set forth in Item 14. The hour and date specified for receipt of Offers Error! Reference source not found. [X] is extended, [ ] Error! Reference source not found.is not extended.

Offers must acknowledge receipt of this amendment prior to the hour and date specified in the solicitation or as amended, by one of the following methods:

(a) By completing Items 8 and 15, and returning __6__ copies of the amendment; (b) By acknowledging receipt of this amendment on each copy of the offer submitted; or (c) By separate letter or telegram which includes a reference to the solicitation and amendment numbers. FAILURE OF YOUR ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If by virtue of this amendment you desire to change an offer already submitted, such change may be made by telegram or letter, provided each telegram or letter makes reference to the solicitation and this amendment, and is received prior to the opening hour and date specified.

12. ACCOUNTING AND APPROPRIATION DATA (If required)

13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF CONTRACTS/ORDERS,

IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.

a. this change order is issued pursuant to: (Specify authority) the changes set forth in item 14 are made in the contract order no. in item 10a.

b. the above numbered contract/order is modified to reflect the administrative changes (such as changes in paying office, appropriation date, etc.) set forth in item 14, pursuant to the authority of far 43.103(b).

c. this supplemental agreement is entered into pursuant to authority of:

d. other (Specify type of modification and authority)

E. IMPORTANT: Contractor [ ] Error! Reference source not found.is not, Error! Reference source not found. [ ] is required to sign this document and return copies to the issuing office.

14. description of amendment/modification (Organized by UCF section headings, including solicitation/contract subject matter where feasible.)

Amendment A001 is issued to accomplish the following:

1. Respond to Questions received by the due date of 12 Noon EDT on 24 July 2009 (see attachment)

2. Extend the due date for proposals from 12 Noon EDT on 13 August 2009 to 12 Noon EDT on 27 August 2009.

3. Replace pages 41 and 70 of the Specification.

All Offerors must acknowledge the receipt of this amendment in their proposal.

End of Amendment A001

Except as provided herein, all terms and conditions of the document referenced in Item 9A or 10A, as heretofore changed, remains unchanged and in full force and effect.

15A. NAME AND TITLE OF SIGNER (Type or print)
16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)

Waldron O’Brien

Contracting Officer

15B. CONTRACTOR/OFFEROR
15C. DATE SIGNED
16B. UNITED STATES OF AMERICA
16C. DATE SIGNED

BY

(Signature of person authorized to sign)

(Signature of Contracting Officer)

NSN 7540-01-152-8070

PREVIOUS EDITION UNUSABLE

30-105

STANDARD FORM 30 (Rev. 10-83)

Prescribed by GSA

FAR (48 CFR) 53.243

Responses to Questions for the United States Coast Guard (USCG) Transportable Port Security Boat (TPSB) HSCG23-09-R-MNQ227 received by

12 Noon EDT on 07 July 2009 There are a total of 31 questions:

Question 1: Is there an incumbent for the TPSB opportunity under HSCG2309ITPSB or is this a new requirement? If it is a new requirement, could you provide the contract number, award date, award amount and date signed?

USCG Response: The incumbent was Brunswick Commercial and Government Products whose Blanket Purchase Agreement expired in September of 2008.

Question 2: In the Instructions for Proposal Content it states: Under the Vessel Operational Capabilities and Physical Characteristics factor in Volume I, each proposal shall address the specification SEQUENTIALLY. There is an example following.

Please confirm that every single numbered item in the specification requires a response?

USCG Response: Yes

Question 3: Specific to the above question in 1: There are 72 pages in the Specification with numerous numbered items on each page.

If the answer to 1 is, “Yes”, then do you still expect the proposal Volume I to fit within 100 pages?

USCG Response: The page limit is hereby amended from 100 pages to 180 pages.

Question 4: Given the potential detail required for the response, and design work needed to meet the unique conditions of the specification, the time period to respond is extremely short.

Will the USCG be extending the response due date

USCG Response: Yes. The due date is hereby extended from 13 August 2009 at 12 Noon EDT to 27 August 2009 at 12Noon EDT.

Question 5: Due to the complexity of the requirements we are requesting an extension for the submittal of our bid package for 30 days. We would respectfully request the 30 day extension moving the date to September 13, 2009.

USCG Response: See response to Question 4.

Question 6. We request a two week extension of the TPSB Solicitation.

USCG Response: See response to Question 4.

Question 7: Solicitation Standard Form 1449

Block 8. OFFER DUE DATE/LOCAL TIME 08/13/2009 1400 ET

SOLICITATION PROVISIONS:

(2) FAR 52.212-1: INSTRUCTIONS TO OFFERORS-COMMERCIAL ITEMS (JUN 2008)

applies to this acquisition. Addendum to FAR 52.212-1 “Submit both volumes to the attention of the Contract Specialist, Ms. I.J Ezeonwuka by “HANDCARRIED DELIVERY” only on or before 12:00 noon EDT on 13 August 2009”.

Statement: The time shown in Block 8 of the S F 1449 is different from that shown in the Solicitation Provisions.

What is the order of precedent? Is the SF 1449 higher than the Solicitation Provisions?

USCG Response: The time for delivery is no later than 27 August 2009 at 12Noon EDT. The order of precedent is the Solicitation Provisions before the SF 1449

Question 8: Will there be a bidder’s conference?

USCG Response: No

Question 9: We certainly do not want to make an un-necessarily wordy document, however we are requesting that you increase the minimum number of pages in Volume 1. The USCG specifications that defined the general idea of the vessel is 72 pages. As a specification is required this is going to significantly limit the additional info we can include.

USCG Response: The page limit is hereby amended from 100 pages to 180 pages.

Question 10: Will drawings be included in the page count?

USCG Response: Yes

Question 11: How much back up do you want on the vessel – stability, damage stability, speed power, ride motion in sea various sea states, slamming report? We want to give you a lot of data on the vessel, but again, item 2 (Question 9) is a present seemingly limiting what we can submit.

USCG Response: As much back-up as is needed per the amended page limit of 180 pages.

Question 12: Is there a limiting budget for phase 1, i.e. the BEB project set a limit of $3m for this phase?

USCG Response: The budget for this procurement shall be as contained in the Price Scenario Worksheet (see attachment E). As stated in the solicitation: “Offerors shall provide pricing in accordance with the schedule (SF-1449) and the attached price scenario worksheet (see attachment E). The information contained in the schedule and in the price scenario worksheet shall be consistent with each other. The price scenario worksheet shall be used to evaluate the total evaluated price”. Note that the Award for Phase 1 shall be based on best value and all technical factors when combined with past performance are more important than price.

Question 13: If the yard is successful in winning a phase 1 award, how much supporting help will the USCG want/allow from the shipyard?

USCG Response: That information shall be provided after Phase 1 award to the successful Offeror(s).

Question 14: Will the USCG accept any training on the vessel as part of delivery of the vessel?

USCG Response: Yes, see the price scenario sheet

Question 15: What will be the time from delivery of boats in phase 1 to the award of contract?

USCG Response: That information shall be provided after Phase 1 award to the successful Offeror(s).

Question 16: Can one contractor return more than one proposal?

USCG Response: Yes.

Question 17: In the RFI for the referenced project we were of the understanding that composite boats would be an alternative material for the construction of the Transportable Port Security Boat (TPSB). The RFP, however, states that the vessel shall be of aluminum construction. We were hoping to be able to propose a vessel that is constructed of both aluminum and composite (FRP) materials, utilizing each material in areas on the vessel where the individual characteristics/advantages of each material is optimized to the maximum extent possible. Aluminum, for instance would be used in areas where that material provides superior resistance to compression loads, sharp impact or high abrasion. Examples would be along the side rails exposed to impact and abrasion when coming along side of another vessel or pier.

Will you consider proposals with such alternative construction materials.

USCG Response: No, the requirements for aluminum construction were carefully considered with regard to damage tolerance and the ability of the Coast Guard to conduct repairs.

Question 18: Could you please advise what ballistic protection level is required?

USCG Response: Ballistic protection levels are identified in Section 070-3.5 of the TPSB Specifications. See Section 042-4.6.11 for reference ordering information.

Question 19: Can the maximum weight be changed to 13,000 lbs?

Reference: USCG TPSB Specifications: 070-2: Section Principal Characteristics, Table 070-1

Characteristic - Weight (fully outfitted with trailer) Threshold - 12,000 lbs maximum

096-22.2 Fully Outfitted Condition – Light condition with a full load of fuel, weapons mounted and ammo, including ballistic protection

910-1.1 Each TPSB shall be provided with a trailer that is specifically configured to carry and support the weight (plus 15% for life cycle growth) of the boat. The trailer shall be suitable for transporting the boats at highway speeds up to 65 mph on United States roads and highways. The trailer shall be marine grade, suitable for frequent launch and recovery in a salt water or fresh water environment.

910-1.11 The trailer shall be rated for boat in the Fully Outfitted Condition plus 1,500 lbs of gear.

Statement: Fully Outfitted Condition = 12,000 lbs – Trailer Weight

In this trailer’s size/weight range, for every 1,000 to 1,500 lbs increase in load carrying capacity, the trailer weight increases by 500 lbs. This means that the “Fully Outfitted Condition” decreases by the same amount (500 lbs) for a total of 1,000 lbs if requirements of Specifications Sections 910-1.1 and 910-1.11 are applied.

The only way to keep the 12,000 lbs maximum weight is to reduce the “Fully Outfitted Condition” by 1,000 lbs. The only variables for reducing this weight is the aluminum scantling weight i.e. Hull Plate, Deck Plate, Bulwark Plate etc. This means going to plate thicknesses of 0.160 inches and 1/8 inch for major scantlings. This is not considered good marine practice.

Changing the maximum weight to 13,000 lbs is crucial to making the Boat viable.

Note;

In order to meet the operational requirements of the Specifications the diesel fuel alone is over 1,000 lbs.

USCG Response: The 12,000 pound maximum weight is based on vehicle towing limits and cannot be increased. Even though Specification 096-22.2 states a Fully Outfitted Condition is a Light condition with a full load of fuel, weapons mounted and ammo, including ballistic protection, for trailering purposes and acceptance, the weight of the boat and trailer will be measured in a Fully Outfitted Condition minus the weapons and ammo. Therefore the weapons and ammo will not be included in the maximum weight of 12,000 lbs and this section of the specification is hereby amended. The fuel and ballistics protection will be included in the weight.

Question 20: Is ballistic protection required across the aft end of the enclosure /sheltering system?

Reference: Section 151-2.6 Statement: 151-2.6: The ballistic protection is intended to provide emergency shelter in the vicinity of the console and seating for the four (4) crewmembers. The panels should be above the waist in height , and allow for shelter while still operating the boat, firing the mounted machine guns and potentially firing handguns or shoulder fired small arms.

USCG Response: Yes, protection for the crew against shots fired upon the TPSB from aft is required.

Question 21: Will the Coast Guard be adding this feature to their Specifications?

Reference: Section 151-1.5/.6 Statement: 529-1.5 The bilge pump(s) shall have an integrated automatic control that activates the bilge pump when water is present in the bilge.

529-1.6 The electric bilge pump(s) control switch shall be located at the console. The switch shall provide for on/off and automatic operation. An indicator light that illuminates when the bilge pump is operating shall be provided at the console. .

A good marine safety feature on most boats is to have an independent bilge alarm.

USCG Response: No, a bilge alarm system is not required at this time.

Question 22: Please confirm if diesel outboards are considered acceptable?

USCG Response: Diesel outboards would be considered acceptable as long as all of the other provisions of the specification can be met.

Question 23: Will a full set of manuals be expected?

USCG Response: Yes, see Specification Section 086 of the specification.

Question 24: Should the referenced M16 be M16A2?

Reference: Section 670 Stowage

671-1.2 The TPSB shall have sufficient vertical or horizontal storage for crew personal weapons (M16, M203, M870, M4). TPSB crew’s personal weapons must be readily accessible within 10 seconds (Threshold), five (5) seconds (Objective).

Statement: M16 is obsolete and no longer manufactured.

USCG Response: Yes, M16A2 is correct and should replace M16. This section of the specification is hereby amended.

Question 25: Which one of these weapons will be the coxswain personal weapon and will it have to be located at or adjacent to the console?

Reference: Section 670 Stowage 670-1.2 The TPSB shall have sufficient vertical or horizontal storage for crew personal weapons (M16, M203, M870, M4). TPSB crew’s personal weapons must be readily accessible within 10 seconds (Threshold), five (5) seconds (Objective).

Statement: Normal Operating Condition – Fully Outfitted Condition with a crew of four (4). The crews weapons are listed as a “M16, M203, M870, M4”.

USCG Response: Anyone of the weapons maybe used by the coxswain. The weapons referenced in 671-1.2 do not need to be stowed at or adjacent to the console.

Question 26: Will the Coast Guard furnish the dimensions and weights for the personal weapons along with the ammunition carried them? Does the 220 lbs include any of the personal weapon/ammunition?

Reference: Section 670 Stowage

670-1.2 The TPSB shall have sufficient vertical or horizontal storage for crew personal weapons (M16, M203, M870, M4). TPSB crew’s personal weapons must be readily accessible within 10 seconds (Threshold), five (5) seconds (Objective).

Statement: No dimensions or weights are given for the personal weapons along with the ammunition carried. No ammunition clip weight is given. The boat is weight sensitive and the weapons/ammunition weight information is critical to the functional design.

USCG Response: A M16A2 is 39.5 inches in length and 8.79 lbs. A M203 is 15 inches in length and 3 lbs. A M870 is 50.5 inches in length and 8 lbs. A M4 is 33 inches in length and 6.9 lbs. The 220 lbs crew weight as referenced in 096-2.5 does not include the weapons that are referenced in 671-1.2.

Question 27: Will personal weapons be stowed in a loaded condition?

Reference: Section: 670 Stowage

671-1.2 The TPSB shall have sufficient vertical or horizontal storage for crew personal weapons (M16, M203, M870, M4). TPSB crew’s personal weapons must be readily accessible within 10 seconds (Threshold), five (5) seconds (Objective).

Statement: No statement about whether or not weapons will be stowed in a loaded condition.

USCG Response: The M16A2, M870 and M4 will be stowed in a Coast Guard Standard Load condition (a magazine in place, attached to the weapon, without ammo in the chamber). The M203 will not be in a loaded condition when stowed.

Question 28: Would the Coast Guard consider the secure stowage for two (2) cases of MK3A2 Anti Swimmer Grenades as a space reservation until they have reviewed the serious safety, design and legal issues?

670-1 General

670-1.1 Storage for the outfit items specified in Section 600-1 and any other items the contractor deems necessary for the safe operation of the TPSB shall be provided. The stowage shall be fitted with watertight covers which can be quickly opened for ready access. Items requiring stowage utilize this space. All items, with the exception of the boat hook and bucket require, at a minimum, weather tight storage.

670-1.3 The TPSB shall have secure stowage for two (2) cases of MK3A2 anti swimmer grenades.

Statement: The storage of 40 ea. concussion grenades requires a serious serious munitions locker and not just something fabricated by the boatyard with a locked watertight cover. There are a number of problems with this one line requirement:

· Safety.

· No guidance from the Government.

· The number of “MK3A2 Anti Swimmer Grenades” per case and the size of the case was not given. The MK3A2 Concussion Grenade had 20 ea. to a case and was used to establish the count. They maybe lighter and smaller than the Anti Swimmer Grenades.

· Ballistic Protection and a Sun Shield was not covered.

· Jettisoning in case of fire was not addressed.

Usually the Government furnishes a Standard Drawing that meets a Mil Spec requirement. We have a drawing that meets NAV SEA requirements for about 40 ea. M18 Smoke Grenades about the same size and stored in two cases, This locker has the grenade cases stored in a wooden box suspended in the locker with 12 inches of sand lining the bottom. It has a jettisoning capability. The weight is around 950 lbs. This is only mention to show the complexity of designing an ordinance locker for this type of application.

There maybe legal ramifications for the boatyard should the locker detonate with or without the lose of life.

USCG Response: The intent of paragraph 670-1.3 concerning MK3A2 Anti Swimmer Grenades is to have the ability to secure the cases of grenades in a ready for use state and prevents the cases from movement and becoming wet while the boat is being used.

Question 29: Can the length and weight of .50 cal and M240 MG barrels be provided?

Reference: Section: 670 Stowage 670-1.4 The TPSB shall have secure stowage for spare machine gun barrels).

Statement: The length and weight of .50 cal and M240 MG barrels are not given.

USCG Response: A .50 cal barrel with a length of 45 inches and a weight of 26 lbs is to be used for stowage requirements on the TPSB. A M240 barrel with a length of 24.7 inches and a weight of 6.6 lbs is to be used for stowage requirements.

Question 30: Can the weights, dimensions, and capacities of ammunition containers held by each machine gun tray for the .50 cal and 7.62 mm ammunition be provided?

670-1,5 The TPSB shall have stowage for five (5) times the amount of ammunition held in each machine gun tray Statement: Weights, dimensions, and capacities of ammunition containers held by each machine gun tray for the ,50 cal and 7.62 mm ammunition.

USCG Response: The weight of the .50 cal ammo is 74 lbs per case (2 cans) and 37 lbs per single can (dimensions 11inch X 5 ½ inch x 7 inch). The weight of the 7.62 mm ammo is 84 lbs per case (4 cans) and 21 lbs per single can (dimensions 7 inch X 3 ½ inch x 10 inch).

Question 31: Can the following be furnished; weights for .50 cal MG, M240 MG (with bipod), .50 cal/M240 ammunition trays, MK 16 Mod 8 Gun Mount, and MK16 Mod 9 Tripod Gun Stand (with bolting radios?

Reference: Section 710 Weapon Mounts

710-1 General

710-1.1 The TPSB shall be outfitted with one or more weapon mounts to accommodate a .50 cal or M240 Machine Gun (MG). The weapon mounting points shall accommodate Mk16 Mod 8 Gun Mounts on a hull mounting post or from the deck on a MK 16 Mod 9 Tripod Gun Stand. (Drawings of mounts to be provided as GFI). The contractor will not be required to provide a weapons mount, only a means to bolt-on either mount as stated.

Statement: No weights provided for .50 cal MG, M240 MG (with bipod), .50 cal/M240 ammunition trays, MK 16 Mod 8 Gun Mount, and MK16 Mod 9 Tripod Gun Stand (with bolting radios).

USCG Response: Use 127.87 lbs for the total weight of the .50 cal. Use 27.6 lbs for the total weight of the M240. Use 19 lbs for the total weight of the MK 16 Mod 8 Gun Mount. Use 58 lbs for the total weight of the MK 16 Mod 9 Tripod Gun Stand.

HSCG23-09-R-MNQ227

Replacement Page: 41 of 72 096-2 Definitions of Load Conditions

096-2.1 Light Condition - Boat complete, ready for service in every respect including outfit. Liquids in machinery shall be at operating levels. This condition does not include crew or fuel.

096-2.2 Fully Outfitted Condition – Light condition with a full load of fuel including ballistic protection.

096-2.3 Normal Operating Condition – Fully Outfitted Condition with a crew of four (4).

096-2.4 Full Load Condition – Normal Operating Condition plus two (2) additional passengers.

096-2.5 Crew and passenger weights shall be 220 lbs per person (including outfit) when calculating weights.

097. WEIGHING, INCLINING EXPERIMENT AND FLOTATION

097-1 Scale Weighing and Inclining Experiment

097-1.1 Scale weighing and inclining in air of both boats in the defined Light Condition shall be conducted for the first boat of each type constructed under this Contract. The as-built LCG and VCG shall be calculated from the scale weighing. The recommended procedure is defined below.

097-1.1.1 Suspend the craft from slings fore and aft, one near the bow and one near the stern. Each sling shall be bent on to a common point comprising a shackle, round link or pear link over the centerline of the craft. Both slings shall be vertical when the craft is hoisted. In the hoisted condition, the craft shall have the keel level to within 2 degrees. Weighing may be accomplished with two scales, one on each sling, or by use of a single scale and a link of the same length as the scale which are interchanged. The craft must not change attitude if the scale and link are interchanged. The scale(s) shall be certified legal for trade and shall have a precision better than, or equal to, fifty pounds. The fore and aft and vertical location of the suspension points (the surfaces of the shackle bearing on the member supporting them from above) shall be carefully determined to within one inch relative to a clearly defined point on the craft and shall be level to within one inch of each other. The sum of the readings gives the total weight of the craft, their difference and their location gives the LCG.

097-1.1.2 A weight shall then be applied at a known distance off-center to one side and the angle of heel measured. Additional weight, approximately equal to the initial weight, shall be applied to the same point and the angle of heel shall be measured again. The weight shall then be removed, the angle of heel measured again and then placed in a similar sequence on the opposite side, measuring the resultant angles of heel. The location and amount of weight, the vertical location of the suspension points, and the total weight of the craft gives the vertical center of gravity. The angle of heel shall be measured by two independent means which do not require persons on or under the craft and which give equivalent precision to 1/8 inch of deflection on an eight foot pendulum (approximately 0.1% slope) when one weight is applied. Such

HSCG23-09-R-MNQ227

Replacement Page: 70 of 72

660-1.2 Seat materials shall provide comfortable support of the seated person and shall be fabricated of durable marine grade materials. Materials shall be resistant to tear and puncturing, and not significantly degrade or fade under exposure to sunlight and saltwater.

670 STOWAGE

670-1 General

670-1.1 Storage for the outfit items specified in Section 600-1 and any other items the contractor deems necessary for the safe operation of the TPSB shall be provided. The stowage shall be fitted with watertight covers which can be quickly opened for ready access. Items requiring stowage utilize this space. All items, with the exception of the boat hook and bucket require, at a minimum, weather tight storage.

670-1.2 The TPSB shall have sufficient vertical or horizontal storage for crew personal weapons (M16A2, M203, M870, M4). TPSB crew’s personal weapons must be readily accessible within 10 seconds (Threshold), five (5) seconds (Objective).

670-1.3 The TPSB shall have secure stowage for two (2) cases of MK3A2 anti swimmer grenades.

670-1.4 The TPSB shall have secure stowage for spare machine gun barrels.

670-1.5 The TPSB shall have stowage for five (5) times the amount of ammunition held in each machine gun ammunition tray.

SECTION 7: WEAPON SYSTEMS

710 WEAPON MOUNTS

710-1 General

710-1.1 The TPSB shall be outfitted with one or more weapon mounts to accommodate a .50 cal or M240 Machine Gun (MG). The weapon mounting points shall accommodate Mk16 Mod 8 Gun Mounts on a hull mounting post or from the deck on a MK 16 Mod 9 Tripod Gun Stand. (Drawings of mounts to be provided as GFI). The contractor will not be required to provide a weapons mount, only a means to bolt-on either mount as stated.

710-1.2 The gun mount mating surface shall be as close as feasible to 33.5 in above the deck the gunner will be standing on, however, the mating surface shall not exceed 36.5 in or fall below 30.5 in above the deck the gunner will stand on.

710-1.3 The foundations shall be adequate to support the peak recoil loading of the .50 cal and M-240 7.62mm MG and shall be designed with a safety factor of five (5) on the yield strength of the material. The peak recoil of the .50 cal and M-240 machine guns are 350 pounds per square inch (PSI).

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