1:36 AM in Boat Plans
The following is a typical scope of services and deliverables provided by the Sparkman & Stephens Design Department during the design of a custom yacht.
The process normally consists of the following four (4) phases:
• Concept & Preliminary Design & Engineering Phase
• Contract Design & Engineering Phase
• Final Design & Engineering Phase
• Construction Support Phase
Concept & Preliminary Design & Engineering Phase
Preparation of a preliminary package which executes the design brief in general, including:
Documents:
• xxxx-001 – Design Brief
• xxxx-080 – Preliminary Profile Rendering
• xxxx-090 – Brief Specification
Drawings:
• xxxx-020 – Preliminary General Arrangement
• xxxx-050 – Preliminary Sail Plan
• xxxx-060 – Preliminary Deck Plan & Outboard Profile
Supporting Calculations:
• Preliminary Weights and Centers
• Preliminary Hydrostatics
• Preliminary Keel and Stability Estimate
• Preliminary Speed, Power, Endurance and Tankage Requirements
Contract Design & Engineering Phase
Preparation of a bid package as required to obtain indicative pricing from potential Builders, including:
Documents:
• xxxx-900 – Specification
• xxxx-920 – Interior Specification
• xxxx-800 – Profile Rendering
Drawings:
• xxxx-020 – Preliminary General Arrangement
• xxxx-021 – Preliminary Inboard Profile
• xxxx-025 – Preliminary Joinery Section
• xxxx-030 – Preliminary Construction Section
• xxxx-050 – Preliminary Sail Plan
• xxxx-060 – Preliminary Deck Plan & Outboard Profile
Supporting Calculations:
• Preliminary Weights and Centers
• Preliminary Hydrostatics
• Preliminary Keel and Stability Estimate
• Velocity Predictions (under sail)
• Preliminary Speed, Power, Endurance and Tankage Requirements
• Preliminary Scantlings
Additionally, S&S will assist in the review and analysis of all Builder-submitted Bid Packages.
Final Design & Engineering Phase
Preparation of a design package as required for construction, including:
Documents:
• xxxx-900 – Specification
• xxxx-700 – Trim and Stability Booklet †
Drawings:
Geometry
• xxxx-100 – Lines Plan *
• xxxx-110 – Superstructure Geometry *
• xxxx-120 – Navigation Mast Geometry *
• xxxx-140 – Keel Lines *
• xxxx-150 – Rudder Lines *
• xxxx-160 – Skeg Lines *
Arrangement
• xxxx-200 – General Arrangement
• xxxx-210 – Inboard Profile
• xxxx-211 – Starboard Inboard Profile
• xxxx-220 – Joiner Sections
• xxxx-230 – Joiner Details
Construction
• xxxx-300 – Hull Construction – Plan & Profile †
• xxxx-301 – Hull Construction – Transverse †
• xxxx-305 – Hull Shell Expansion †
• xxxx-310 – Superstructure Construction – Plan & Profile †
• xxxx-311 – Superstructure Construction – Transverse †
• xxxx-320 – Lamination Schedule
• xxxx-330 – Hull to Superstructure Joint †
• xxxx-340 – Construction Details †
• xxxx-350 – Keel Construction †
• xxxx-360 – Rudder Construction †
• xxxx-370 – Welding Schedule †
• xxxx-380 – Chainplate Construction †
• xxxx-390 – Mast Step & Partners Construction †
Machinery & Systems
• xxxx-400 – General Machinery Arrangement
• xxxx-410 – Engine Room Air Plan
• xxxx-420 – Drive Line Plan †
• xxxx-430 – Steering System Plan †
• xxxx-440 – Anchor Handling Arrangement †
• xxxx-450 – Tank Arrangement †
• xxxx-460 – Bilge & Fire System Schematic †╪
• xxxx-461 – Fresh Water System Schematic †╪
• xxxx-462 – Black & Gray Water System Schematic †╪
• xxxx-463 – Fuel Oil System Schematic †╪
• xxxx-464 – Lube & Dirty Oil System Schematic †╪
• xxxx-465 – Sea Water System Schematic †╪
• xxxx-466 – Compressed Air System Schematic †╪
Sail & Rigging
• xxxx-500 – Sail Plan
• xxxx-510 – Sheet Lead Plan
Outfit & Finish
• xxxx-600 – Deck Plan & Outboard Profile
• xxxx-601 – Presentation Profile
• xxxx-610 – Hull Marking Plan †
• xxxx-611 – Hull Striping Plan
• xxxx-620 – Boarding & Mooring Plan †
• xxxx-630 – Docking Plan
• xxxx-640 – Structural Fire Protection Plan †
• xxxx-650 – Fire & Safety Plan †
Supporting Calculations:
• Weights and Centers
• Hydrostatics
• Velocity Predictions (under sail)
• Resistance Calculations (under power)
• Speed, Power, Endurance and Tankage requirements
• Intact Stability Calculations
• Subdivision and Damage Stability Calculations †
• Hull Structure Scantlings
• Superstructure Structure Scantlings
• Sailing Balance
• Keel Design and Engineering
• Rudder Design and Engineering
• Rig Design and Engineering
• Driveline Engineering
• Engine Room Air Calculations
• Flotation and Inclining Measurements and Analysis †
†Denotes Drawings and Calculations which are to be submitted for Class and MCA approval.
* Denotes Drawings, which based on Builder practice and preference, can be supplied as 3-D surface files
╪ Denotes a System Schematic. S&S defines a System Schematic as a line diagram showing the interconnection and relationship of elements to show the philosophy and operation of the system, but does not show the physical elements. It is not intended as an installation diagram or as a complete System Design.
Construction Support Phase
S&S will inspect the quality of the work for compliance with the best applicable standards and the Client agrees that S&S shall inspect the work at reasonable intervals and be guided by S&S recommendations with regard to the quality of workmanship, materials and fittings to include:
• Consultation with the builder and review of Builder’s, and its Subcontractors’, detailed construction and shop plans with respect to aesthetics, function, performance, strength and safety.
• Periodic visits to the Builder's yard to observe and inspect the progress and quality of the work for compliance with the plans, specifications and build schedule.
• Sea Trials of the completed yacht including review of compliance to plans and specification.
• Flotation and Inclining Measurements and Analysis
• Trim and Stability Booklet
• Performance Analysis
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Catalina 38
The brand was bought by Najad and when Najad went down and was bought by other companies, Maxi yachts was left to die. When everybody thought that Maxi yacht was finished an improbable savior appeared, the Polish Delphia.
Delphia is a relatively new company that started with a technological help of the Italian Comar (the ones that make the Comet) and soon it was making reliable quality sailboats even if the designs are a bit under average regarding other mass production builders (they insisted in having their boats designed by Polish NAs).
They had the good sense to ask for help to old Pelle Petterson to finish the model that Maxi was developing when it went down, a more sportive model and Pelle accepted the challenge of working with the "kids" from Delphia and it seems they got along together notwithstanding the age difference. I am very curious about the result that will be presented at the Dusseldorf boat show. 
It is not only a difference of age but a difference of methods in designing a boat, being Pelle from the old school, designing by hand and applying intuition and the knowledge of a life designing fast sailboats, complemented with the work of the new Polish NAs that design with cad and use modern VPP and CFD to improve the design.
In what regards design, a very interesting boat with a hull with chines, that will allow a considerably heeling angle before hitting the water and for what we can see of the building, a top boat that uses carbon to reinforce more stressed areas and a structural grid to distribute effort by the hull . The hull is a cored one (with PVC as core) and laminated with vinylester resins, being the keel area monolithic with reinforced lamination using carbon fibers.
The interior layout seems very good and I am very curious regarding the quality of the interior design, that contrary to other Maxi is a more modern one. The designs don't look great but they are just hand made designs and what matters is the real thing.
