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Android · Hulls, Locker, Trim, Speed, Settings
CoinSrike Diamonds: hull design, stability and speed in one dark dashboard
Open a plan like Harbour Runner 5.6, read the verdict, and share numbers your whole crew can check. No spreadsheets, no guessing the draft.
- Sound verdict
- 12 Coastal criteria pass
- 3.77 m/s cruise
Three starter codes are open in the block below. Copy one, then install.
- Listed on Google Play for Android
- Salt-water density of 1025 kg/m³ shown in every report header
- Every row has a label, a value and a written unit
Starter codes for new crew
Pick your launch bonus
Three ways in. Copy a code, tap download, and bring it with you.
Double-Up Welcome Match
Featured code window14:59
MATCH-STRIKE
- Applies to a first top-up
- Match level depends on your region
- 18+ only, terms apply
Free Spins on the Diamond Reels
SPINS-DIAMOND
- Credited after sign-up
- Valid on selected reels only
- Check expiry before you play
18+ only. Codes, amounts and availability depend on your region and the current store listing, and are not shown in the app's technical screens. Confirm all terms at redemption.
Built for crews who compare notes
How a shared session runs
One person drafts the hull, another checks the verdict, a third runs the engine. The five tabs keep everyone on the same page.
Shape the hull
- Open a hull such as Estuary Launch from the Hulls tab.
- Tap the pencil to rename the plan so teammates know which version they are reading.
- Read capacity at a glance: 900 kg maximum payload, 8 persons, 0.700 m maximum draft.
- Check reserve buoyancy at maximum load, shown as 28.7 % on the sample hull.
Read the verdict
- The Trim tab opens a Report with one big word: Sound.
- Under it sits the closest criterion to its limit, so the weak spot is never hidden.
- Scroll to the Coastal checklist and tap any row with a chevron for the detail behind it.
- Pass rows carry a check icon and the word, not just a color.
Run the speed
- Switch to Speed and read cruise at 3.77 m/s on a petrol outboard of 2.5 kW at 100 %.
- See Froude 0.473 next to hull speed 3.17 m/s.
- Drag the cursor along the power curve to read any point.
- Open the drag row for the 356.4 N breakdown at cruise.
Share the same basis
- Each report header lists plan name, date, category and water density.
- Your crew sees Coastal and salt 1025 kg/m³, so nobody compares apples to freshwater.
- Use the Locker and Settings tabs to keep the rest of your setup in order.
- The Locker's contents are not shown in the store screenshots, so open it after install.
Technical analysis
Inside the numbers: how a report is built
Everything starts at equilibrium. For the sample plan Harbour Runner 5.6, displacement is 763 kg, or 0.7443 m³ (744 L), floating at 0.270 m draft amidships with 0.8° of bow-down trim. The app lists LCB, LCG and LCF, plus KB 0.181, BM 0.770 and KM 0.951 m. Minimum freeboard is 0.641 m at station 20.
The headline figure is the corrected metacentric height. The card shows it as a big orange number and spells out the sum beneath: KM 0.951 minus KG 0.288 minus free surface 0.000 leaves 0.663 m. Then the stability chart draws the righting arm against a wind lever at 12.00 m/s, with shaded areas up to 30° and between 30° and 40°.
Those curves feed the Coastal checklist. Angle of vanishing stability reads 90.0° against a 65.0° minimum, which is why the verdict says 38 % in hand. Payload against capacity sits at 38 % of a 90 % cap. On the Estuary Launch hull, 533 L of sealed chambers carry 546 kg against a 380 kg swamped weight, so it floats level. The Speed tab closes the loop with Froude number, hull speed and drag.
0.663
m corrected metacentric height on the sample plan, against a 0.250 m minimum.
| Platform | Android |
|---|---|
| Package ID | com.chessunive.fpe |
| Store tagline | Explore Hull Design, Stability and Speed |
| Bottom tabs | Hulls, Locker, Trim, Speed, Settings |
| Sample plan | Harbour Runner 5.6 |
| Criteria set | Coastal, 12 pass |
| Water density | 1025 kg/m³ |
| Wind lever | 12.00 m/s |
| Cruise speed | 3.77 m/s |
| Hull speed | 3.17 m/s |
| Version, size, rating | See Google Play listing |
| Data checked | November 2026 |
Core features
Tools every hull crew ends up using
Six things you can read straight off the screens, nothing added.
One-word stability verdict
A green check and the word Sound sit on top of the Report, with the criterion closest to its limit spelled out below.
Full equilibrium data
Metacentric height, draft, trim, steady heel, freeboard, waterline length and beam, displacement, LCB, LCG, LCF, KB, BM and KM.
Righting arm chart
See the righting arm, a 12.00 m/s wind lever and the areas to 30° and 30 to 40° on one dark panel with a legend.
Coastal checklist
Seven rows from vanishing stability to metacentric height, each with its limit, its value and a chevron to dig deeper.
Capacity and swamped test
Maximum payload, persons, draft and reserve buoyancy, plus a Floats when swamped check built on sealed-chamber volume.
Speed run and drag
Cruise speed, Froude number, hull speed, a power-against-speed curve with a draggable cursor and a drag-at-cruise bar.
Your plan is waiting
Join the dock-side crew with CoinSrike Diamonds
Android app. Price and size are shown on the Google Play listing. Install takes about a minute on a typical connection.
Download CoinSrike DiamondsRequires an Android device. Ads, in-app purchases and the age rating are listed in the store. Players must be 18+ for any bonus offer.