Trans RINA, Vol 154, Part C2, Intl J Marine Design, Jul - Dec 2012
intended for housing and public buildings to fit into the boat environment (fig.3).
4. THE DESIGN REQUIREMENTS
Any project cannot be discussed abstract away from statement of design requirements. Present design named R1200 was intended for coast and lakes of Northern Europe and required to provide stay up to one week on board for owner and his guests for purposes of cruising and fishing.
The 12m boat was to have master cabin with private head suitable for wheelchair, minimum 2 guest cabins, saloon. Important was visibility aft from steering as important feature for fishing. Maximum hull draught of 0.8m, outboard powering and design speed of 20kts was requested. Hull material - FRP sandwich with capability for the craft to be disassembled into container-size moldings for transport. Generally the
craft should
comply with category B of European RCD. Some specific features such as carry of relatively large tender RIB and fishing gear were requested. The boat was to be used with at least one fully functional crew member on board.
5. When
DEVELOPING THE CONCEPT working
on such concept that task
Spacious and unobstructed aft deck. We have departed
from traditional schemes with cabin
and elevated side decks and have left only narrow (180mm) ‘service’ passageways for crewmembers where they can move holding the rails on rooftop.
Some other smaller features included:
The bridge deck of catamaran is shaped purposely for single-level main deck;
No ‘discriminative’ lifelines and guardrails;
bulwarks are used at bow and aft decks for protection and safety feeling;
Steering console fully accessible for wheelchair driving;
Better visibility from seated steering position due to high cabin with ample windows, low profile bow shape;
Bow ramp – for parking by bow wheelchair can be deployed;
Side doors with ramps; Crane that is used both
for moving person in wheelchair and operating the tender;
Plenty of handrails placed strategically; Modular aft seat with swing backrests – for fishing and various cockpit activities;
Special fishing gear. re-thinking of
stereotypes and even smoothly reviewing customer’s requests is often useful. Looking at boats of customer’s liking it became evident wheelchair-friendly
of designing craft was impossible without
significant departures from main trends in yacht design. Originally the customer wanted to place master bedroom in one of demihulls (typical layout for catamarans) with lifting platform access up/down; however we succeeded in convincing him that master bedroom and bathroom should
be placed on bridge deck allowing easy
movement . When discussing ideology of craft and issues of psychological comfort, we introduced ‘full access concept’ for wheelchair person – once the boat is designed purposely for owner on wheelchair, there should be no areas of boat where he could not access! Well, this statement might exclude guest cabins and bathroom, and some service areas as tender storage…
The following landmarks on layout highlighted:
design were Figure 4: Analysis of R1200 profile
Catamaran concept that provides stable platform with mainly single-level layout;
Maximized cabin/usable space on main level; Master bedroom and toilet, and also saloon on main level (bridge deck); (or
Walk-through drive through?) wheelchair access to bow deck. Guest and crew cabins and toilets in demihulls; ©2013: The Royal Institution of Naval Architects saloon 6. with EXTERIOR STYLING
The styling theme was to give the craft the feeling of safety, accessibility and speed. From the beginning the customer’s request was to have modernistic styling of craft; though it might be challenging considering features
C-19
The implementation of abovementioned considerations into design is presented on fig.5 and 9.
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